Eighth Supplementary List of British Isles Minerals (English)

Eighth supplementary list of British Isles minerals (English)

GEORGE RYBACK 42 Bell Road, Sittingbourne, Kent ME10 4EB, England AND PETER C. TANDY Department of Mineralogy, British Museum (Natural History), London SW7 5BD, England

T n E supplementary lists of British Isles minerals mation and, although they deal mainly with record those minerals found in Great Britain, published work, in recording some occurrences Northern Ireland, and the Republic of Ireland that may otherwise remain unpublished. that are not included in Greg and Lettsom's Greg and Lettsom's Manual (1858), now widely Manual (1858). Seven such lists have been available in its reprinted form, still remains the published to date: only general reference work on British Isles minerals. Its age limits its usefulness and also First: Spencer, L. J. (1898) Rep. Br. Assoc. Adv. Sci., 875-7. perpetuates a somewhat antique image of the state of regional mineralogy in these countries. Second: ldem (1931) Ibid., 378. Third: Idem (1958) Mineral. Mag., 31, While a replacement for Greg and Lettsom's 787-806. Manual is not yet envisaged, the outlook for Fourth: Embrey, P. G. (1977), as appendix to English mineralogy has improved recently. The classic minerals of Cornwall and Devon are reprinted edition of Greg and Lettsom (1858), where the first three lists are also reprinted. splendidly described by Embrey and Symes Fourth list reprinted in Mineral Mag., 42,169-77. (1987), although their book does not aim to Fifth (Scottish): Livingstone, A. and Macpher- catalogue all the minerals or localities in these son, H. G. (1983) Mineral. Mag., 47, 99-105. counties. Young (1987) and Cooper and Stanley Sixth (Welsh): Bevins, R. E. (1988) Ibid., 52, (1990) have dealt comprehensively with all the 121--4. known occurrences in the Lake District, and in Seventh (Irish): Ryback, G., Nawaz, R., and the Caldbeck Fells area within the Lake District, Farley, E. (1988) Ibid., 52, 267-74. respectively, and these works should be consulted for further details of any Lake District mineral The last three, together with the present English mentioned in our list. list, represent a set equivalent to one of the earlier More than 850 species are now known from the lists, the faster pace of new discoveries dictating British Isles, and 580 or so from England. Of the division into smaller regional lists. An occur- these latter, about 116 are listed here as certain rence qualifies for inclusion in this English list new additions, together with a few interesting only if it is both the first in the British Isles and varieties of species already recorded from the from an English locality, although the practice of British Isles; the remainder of the 144 entries mentioning, where appropriate, additional finds concerns occurrences that need further work or in whatever region has been continued. are in some way doubtful. The list documents To keep the supplementary lists realistically over 170 published occurrences and 70 unpub- brief, none of them routinely includes corrections lished ones, and includes the following new of or deletions from Greg and Lettsom's Manual species: ashoverite, barstowite, ferrok~sterite, (1858), nor new and perhaps more significant sweetite, tristramite, and vochtenite. occurrences of species already on record. (A 'NHM' refers to the Natural History Museum mineral should not normally appear in more than (statutory name British Museum (Natural one list.) Nevertheless, the lists are useful in History)). NHM identifications were by powder bringing together a great deal of scattered infor- X-ray diffraction unless otherwise stated. Mineralogical Magazine, June 1992, Vol. 56, pp. 261-275 Copyright the Mineralogical Society 262 G. RYBACK AND P. C. TANDY Acknowledgements mine, St. Just, Cornwall (Elton and Hooper, We are grateful to C. Alabaster, D. Baker, R.E. 1992). Bevins, R.S.W. Braithwaite, D.P. CIough, N.J. Elton, J. Faithfull, J.G. Francis, N. Hubbard, V. Andradite, stannoan Holyer, A. Livingstone, S. Moreton, S. Rust, C. Sparrow, R.E. Starkey, R.F. Symes, P. Wallace, In tin-bearing skarns at Meldon, Devon (El M. M. Wirth, and B. Young for supplying unpublished Sharkawi and Dearman, 1966). material and answering queries. We thank especially C. J. Stanley for valuable comments and information. Antimony Sb Trigonal P. Perroud kindly provided data on minerals collected From Pengenna mine, St. Kew, Cornwall; by A. de Hailer at Tynagh mine, Ireland, unpublished except in newsletters (Bulletins d'information) of the Hannaford, near Barnstaple, Devon; and locali- Societ6 genevoise de minrralogie. ties in the Lake District, Cumbria (Ixer and Stanley, 1980). Inclusions (<5 ~tm) in galena at nine localities in the Lake District (Stanley and Akagangite [3-Fe3+O(OH,CI) Tetragonal Vaughan, 1981). Rare isolated granules (-<20 ~tm) in quartz, Wet Swine Gill, Caldbeck Significant component of siderite-calcite-Fe Fells, Cumbria (Fortey etal., 1984). [Also, as sulphide concretions being formed in reduced rare inclusions in galena, at Tynagh mine, Co. intertidal marsh and sandflat sediments, Warham Galway, Eire (Clifford etal., 1986). Earlier Marshes, Norfolk (Pye, 1988). Cf. Greigite. As a records are doubtful: Cornwall (First Supplemen- secondary mineral at Gravel Hill mine, Perranza- tary List); Doigelly gold field, Gwynedd, Wales buloe, Cornwall (C. Sparrow, pers. comm., 1991; (Andrew, 1910).] Arsenian antimony forms mi- XRD by Monica Price, Oxford). croscopic inclusions in arsenic in pegmatite at Meldon, Devon (von Knorring and Condliffe, Alloclase (Co,Fe)AsS Monoclinic 1984). Overgrowths (<0.5 mm) on arsenopyrite in a quartz-chlorite-apatite vein at Scar Crag, Causey Argentopyrite (?) AgFe2S3 Orthorhombic Pike, near Keswick, Cumbria (Ixer et al., 1979). As euhedral crystals (<150 • 30 ~tm), twinned 'stars' and aggregates of grains in an unusual Ag- Alluaudite Monoclinic Ni-Co mineral assemblage at Tynebottom mine, NaCaFe 2+ (Mn,Fe 2+ ,Fe 3+ ,Mg)2(PO4) 3 near Alston, Cumbria; the dimorph sternbergite A green alteration product of triphylite and occurs as grains within the argentopyrite aggre- possibly triplite in pegmatite at Megiliggar Rocks, gates (Ixer and Stanley, 1987). [The specimens, in Tremearne, Breage, Cornwall; XRD pattern and the Kingsbury Collection in NHM, may not be electron microprobe analysis consistent with from this locality (C. J. Stanley, pets. comm., those of alluaudite (Stone and George, 1983). 1990).]

Alumohydrocalcite Triclinic Ashoverite Zn(OH)2 Tetragonai CaA12(CO3)e(OH)4.3H20 A new species, from an oxidised vein exposure White powdery patches in massive aliophane at Milltown quarry, near Ashover, Derbyshire, veins in sandstone, old museum specimens from forming groups of colourless 0.5 mm square Scarborough, North Yorkshire; and, associated plates on fluorite (Clark etal., 1988; Rust, 1991b). with halloysite, as white powdery aggregates Cf. Sweetite. between nodules of scarbroite in the infiU of solution pipes in sandstone, Weston Favell, Barbosalite Fe2+Fe~+(PO4)2(OH)2 Monoclinic Northamptonshire (Ryback, 1988). With allo- Present in the cores of spherules of 'andrewsite' phane, gibbsite, etc. in fissure-fill in limestone, from Wheal Phoenix, Linkinhorne, Cornwall Woodleaze quarry, Tytherington, Avon (Alabas- (Dunn, 1990). Cf. hentschelite. ter, 1989a). Barium-pharmacosiderite Tetragonal (?) Andersonite Trigonal BaFe~+(AsO4)6(OH)8.14HzO Na2Ca(UOz)(CO3)3.6H20 An electron microprobe analysis is given of a Small masses of intergrown bright yellow-green specimen from Cornwall (Peacor and Dunn, pseudocubic crystals (-<3mm), with schr6ck- 1985). [Also, as small yellow cubes, from Tynagh ingerite and gypsum, on walls of a level in Geevor mine, Co. Galway, Eire; XRD and qualitative MINERALS FROM THE BRITISH ISLES 263 EDS analysis (A. de Haller specimen; P. Per- Carnotite (?) Monoclinic roud, pers. comm., 1989).] K2(UOz)zV2Os.3H20 Bright yellow earthy from South Terras mine, Barstowite PB4(CO3)C12.H20 Monoclinic St. Stephen-in-Brannel, Cornwall; identified by A new species, forming aggregates of tiny qualitative chemical tests (Gramaccioli, 1955). subparallel elongate colourless crystals, as an [Unconfirmed. Francevillite occurs at this locality alteration product of phosgenite in lead veins at (Fourth Supplementary List).] Bounds Cliff, St. Endellion, Cornwall (Stanley et al., 1991). Chalcoalumite Monoclinic CuAI4(SO4)(OH) 12-3H~O Bayerite AI(OH)3 Monoclinic Pale blue to almost colourless, radiating, with Detected by XRD within a nodule containing copper, cuprite and brochantite, on childrenite, gibbsite and quartz, from the infill of solution at South Wheal Crebor (=New East Wheal pipes in Upper Chalk at Newhaven, East Sussex Russell), Tavistock, Devon (Braithwaite and (Wilmot and Young, 1985). Cooper, 1982); cf. carbonate-cyanotrichite. White spherules (-<0.05 ram) investing quartz Berthierite FeSb2S4 Orthorhombic crystals, with malachite, mimetite, brochantite, and chrysocolla, at Penberthy Croft mine, St. Occurs in antimony ore at Wheal Prosper, St. Hilary, Cornwall (NHM identification, 1985, D. Ewe, Cornwall (NHM identification, 1982, Clough specimen). [Also from two localities in R. W. Barstow specimens). Also at Wet Swine Wales (Bevins etal., 1985; Saich and Rust, Gill, Caldbeck Fells, Cumbria, as robust prisms 1987).] up to 2mm long (Fortey etal., 1984), and at Hogget Gill, Patterdale, Cumbria (A. Russell specimen in NHM, see Young, 1987). [Earlier Clausthalite PbSe Cubic records from Cornwall (Greg and Lettsom, 1858; A suite of rare selenides accompanies the Collins, 1892) are uncertain.] dendritic gold of Hope's Nose, Torquay, Devon: clausthalite, eucairite, fischesserite, klockman- Bolgite Cubic nite, naumannite, penroseite, tiemannite, trtis- Pb26AgmCuzaC162( OH)48.3H20 tedtite, tyrrellite, and umangite. They occur as Rare tiny blue cubes, with cumengdite, pseudo- microscopic grains and patches in calcite (Stanley bol6ite, cerussite, phosgenite, malachite, etc., etal., 1990). Analyses and optical data for from Tolcarne Beach, Newquay, Cornwall (V. clausthalite, eucairite, fischesserite, penroseite, Holyer specimen in National Museum of Wales; tiemannite, and tyrrellite were published earlier XRD identification, 1983, by P.A. Williams). (Criddle and Stanley, 1986). Clausthalite is also Also from Newporth Beach, near Falmouth, reported from Budleigh Salterton, Devon (P. Cornwall; presence of Ag confirmed by micro- Nancarrow, pers. comm. in Stanley et al., 1990). probe analysis (NHM identification, R. Cook specimen). Coffinite, yttrian phosphatian Forms the cores of radioactive nodules in Cancrinite Hexagonal Triassic sediments from the Knowle borehole, N a6Ca2A16Si6024(CO3)2 near Solihull, West Midlands; U0.64Y0,21_ As an alteration product of nosean in phono- P0.17SiO4 (Harrison et al., 1983). ]Similarly from lite, Wolf Rock, off Cornwall (Harrison et al., the Avoniel borehole, Belfast, N. Ireland; micro- 1977). probe analyses (Parnell, 1988a).]

Carbonate-cyanotrichite Orthorhombic Corrensite Cu4Alz(CO3,SO4)(OH)12.2H20 (Interstratified chlorite + vermiculite or smectite) Bright blue matted acicular crystals and coat- In clay fraction of Keuper mudstone at Wilkes- ings on copper, cuprite and childrenite, in places Icy, near Audlem, Cheshire (Poole and White- grading into chalcoalumite, from New East man, 1966). In Keuper marl at a number of Wheal Russell (=South Wheal Crebor), Tavis- localities in Yorkshire, the Midlands, and South tock, Devon (Starkey, 1986). [Cyanotrichite (lett- Wales (Davis, 1967). In the Rhaetic of St. Audries somite) was listed in the First and Third Supple- Bay, near Watchet, Somerset; Seaton, Devon; mentary Lists; cf. Macpherson, 1983.] and unspecified localities in between (Myall, 264 G. RYBACK AND P. C. TANDY 1979). [Also in Ordovician pelites in Snowdonia, Cornwall (NHM identification, P. Wallace speci- Wales (Merriman and Roberts, 1985).] men collected in 1986).

Coulsonite (?) FeV204 Cubic Dioptase CuSiO2(OH)2 Trigonal Mentioned as a possible former constituent, Bright green crystalline crusts, with rosasite, now replaced by hematite, in basal breccias of the serpierite, and adamite, Putts Gill baryte mine, Mercia Mudstone Group at Newhurst quarry, Caldbeck Fells, Cumbria (NHM specimen, Shepshed, Leicestershire (King, 1983). Some collected by A. W. G. Kingsbury in 1953; cf. material was examined at NHM but results were Hartley, 1984). inconclusive and it remains an unconfirmed occurrence. Epidote, stannian With cassiterite, malayaite, stannian titanite, Cumenggite Pb2l Cu20C142(OH)40 Tetragonal and amphibole in skarn at The Crowns, Botal- Pale blue microcrystalline crusts with bourno- lack, St. Just, Cornwall; 0.63-2.84% SnO2 (Van nite, bindheimite, cerussite, etc., from vein Marcke de Lummen, 1986a). exposure at Newporth Beach, near Falmouth, Cornwall (Dean, 1982; Dean et al., 1983). Also Eucairite CuAgSe Orthorhombic from Daymer Bay, near Polzeath, and Trerubies See under clausthalite. Cove, near Delabole, Cornwall (NHM identifications, 1986, R. E. Starkey specimens). Ferberite FeWO4 Monoclinic Recorded from Cornwall, at Penhale mine, St. Cuprosklodowskite Triclinic Cleer, and at Wheal Arthur and East Calstock (H30)2Cu 2+(UO2)2(SiO4)z.2H20 ' mine, Calstock (Dines, 1956). The wolframite Bright-green velvety botryoidal crust on a from 'Godolphins Ball in Cumberland' [Godol- specimen from West Wheal Owles, St. Just, phin mine, Breage, Cornwall], analysed by Cornwall, is shown to be cuprosklodowskite. The Kerndt (1847), appears to have been ferberite. X-ray pattern is significantly different from that of With scheelite and chalcopyrite in a quartz vein at sklodowskite (D. Hudson specimen; NHM iden- Buckbarrow Beck, Corney Fell, Cumbria; micro- tification). Similar and possibly identical material probe analyses (Young et al., 1986). from Geevor mine, St. Just, is under investigation (N. J. Elton and J.J. Hooper, pers. comm., Ferroaxinite Triclinic 1992). Ca2Fe2+ AI2BSi4Ols(OH) An old analysis of axinite from Cornwall Cuprotungstite Cu2+ (WO4)2(OH)2 (Whitfield, 1887) fits manganoan ferroaxinite. In Cornwall, ferroaxinite is recorded from Botallack Yellowish-green glassy massive, with wolfra- mine and Roscommon Cliff, St. Just, and from mite and metatorbernite, Wheal Gorland, St. Liskeard (Dunn et al., 1980). Both magnesian Day, Cornwall (NHM specimen, collected by and manganoan varieties occur in contact skarns A. W.G. Kingsbury in 1955). Green crusts at Meldon, Devon (Chaudhry and Howie, 1969). (-<10 ~tm) on scheelite, from a quartz-scheelite- ]Magnesian ferroaxinite also from Ballyconneely, ferberite vein at Buckbarrow Beck, Corney Fell, Connemara, Co. Galway, Eire (Benjamin, Cumbria (Young et al., 1986). 1968).]

Cyrilovite Tetragonal Ferrocolumbite FeNb206 Orthorhombic NaFe 3+ (PO4)2(OH)a.2H20 Subhedral platy crystals (-<5 mm) from pegma- Yellow bipyramids (0.2--0.7 mm) with chalcosi- tite veins in kaolinised granite at Gunheath china derite in kaolinised granite at Gunheath china clay pit, St. Austell, Cornwall; analysis shows clay pit, St. Austell, Cornwall (Ince, 1986). substantial substituion by Ti, W, and Sc (Hodkin- son and Clark, 1977). Cf. manganocolumbite. Delafossite CuFeO2 Trigonal Small spherules on quartz, Cornwall (An 1860 Ferrokgsterite Tetragonal specimen from the Allan-Greg Collection in Cuz(Fe,Zn)SnS4 NHM, studied by Buist et al., 1966). Blackish Irregular masses up to a few mm across with pointed crystals (<0.5 mm) with malachite and arsenopyrite and quartz, and as exsolution lamel- cuprite on quartz, Tolvaddon mine, Marazion, lae in stannite, Cligga Head, Perranzabuloe, MINERALS FROM THE BRITISH ISLES 265 Cornwall (Kissin and Owens, 1989). The name Marshes, Norfolk (Pye, 1981, 1984); cf. akaga- replaces in part 'isostannite' which is now dis- n6ite. An analysis of greigite from Treore mine, credited (see under kEsterite). St. Teath, Cornwall (Kingsbury Collection in NHM) is given by Criddle and Stanley (1986) but Ferrostrunzite Triclinic the locality is in doubt and this occurrence Fe2+Fe 3+ (POa)2(OH)2.6H20 requires confirmation (C. J. Stanley, pers. Straw-yellow to golden-yellow radial aggre- comm., 1990). gates up to 1 cm in goethite from Gravel Hill mine, Perranzabuloe, Cornwall (Weiss, 1989). Grossular, stannoan The X-ray pattern is said to match JCPDS 11-133 In calc-silicate hornfels at Meldon quarry, and (strunzite) but an XRF analysis shows a ratio of in chert at Red-a-ven mine, Meldon, Devon 10 : 1 of total Fe to Mn. (Dearman, 1965; El Sharkawi and Dearman, 1966). In a calc-silicate vein at Crowns Rock, Fersmite Orthorhombic Botallack, St. Just, Cornwall (Alderton and (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6 Jackson, 1978). Partially replacing a microlite grain in lithium pegmatite from Meldon, Devon (von Knorring Hedleyite Bi7Te3 Trigonal and Condliffe, 1984). As grains (-<0.2 mm) with bismuth, bismuthinite, and joseite in greisen, Carrock mine, Cald- Fischesserite Ag3AuSe2 Cubic beck Fells, Cumbria (Cooper and Stanley, 1990). See under clausthalite. Hedyphane Pb3Ca2(AsO4)3CI Hexagonal Fraipontite Monoclinic (Zn,AI)3(Si,AI)2Os(OH)4 Cream coioured radiating crystal aggregates (-<7 mm) with duftite on quartz, Brandy Gill, Soft white botryoidal crust, with smithsonite Caldbeck Fells, Cumbria (NHM identification, and hemimorphite, from Copperthwaite vein, 1985, R.E. Starkey specimen). [Also from Swaledale, North Yorkshire (NHM identifica- Tynagh mine, Co. Galway, Eire, as white to tion, 1967, G. Ryback specimen). greenish tufts with malachite (A. de Hailer specimen; P. Perroud, pers. comm., 1989).] F~lOppite Pb3SbsSls Monoclinic Dark grey patches of fibrous crystals accom- Hentschefite Monoclinic panying stibnite in a quartz-stibnite-zinckenite- CuFe 3+ (PO4)z(OH)2 berthierite vein at Wet Swine Gill, Caldbeck 'Andrewsite' from Wheal Phoenix, Linkin- Fells, Cumbria (Fortey et al., 1984; cf. Cooper home, Cornwall, is a mixture of hentschelite and and Stanley, 1990). rockbridgeite, with minor chalcosiderite, and is discredited as a species (Dunn, 1990. Cf. Glaucodot (Co,Fe)AsS Orthorhombic barbosalite. Microscopic overgrowths on arsenopyrite in a quartz-chiorite-apatite vein at Scar Crag, Causey Hetaerolite ZnMn204 Tetragonai Pike, near Keswick, and on marcasite at Tynebot- tom mine, near Alston, Cumbria (Ixer et aI., Small black octahedra and crystal aggregates in 1979). From Paddy End mine, Coniston, Cum- lizardite veins at Eastern Cliff, Kennack Sands, bria (C. J. Stanley, pets. comm. quoted by Lizard, Cornwall (Bevins et al., 1987). Young, 1987). Heterogenite CoO(OH) Trigonal Gold, palladian Black botryoidal crust c. 3 • 2 cm across on The dendritic gold of Hope's Nose, Torquay, mineralised Permo-Triassic sandstone from Devon, is palladian, with about 1 to over 6% Pd Engine vein, Alderley Edge, Cheshire (NHM (Clark and Criddle, 1982); may contain up to 16% specimen collected by A. W. G. Kingsbury in of palladium (Scrivener et al., 1982). 1963).

Greigite Fe 2+ Fe3 + $4 Cubic Hurnboldtine Fe2+CzO4.2H20 Monoclinic Significant component of siderite-calcite-Fe Yellow mierocrystalline crust (4 • 4 cm in sulphide concretions being formed in reduced area), associated with crystals of cassiterite, intertidal marsh and sandflat sediments, Warham quartz and tourmaline, from Pendarves mine, 266 G. RYBACK AND P. C. TANDY Camborne, Cornwall (NHM identification, 1986, Jos#ite (Jos~ite-A) Bi4TeS2 Trigonal D. Baker specimen). A major constituent of 'grtinlingite' from Car- rock mine, Caldbeck Fells, Cumbria, other Hydro-andradite Cubic phases usually present being jos~ite-B, bismuthi- Ca3Fe3+(SiO4)3 x(OH)4x nite, and ingodite (Peacock, 1941; Zav'yalov and A fluorine-beating aluminian hydro-andradite Begizov, 1981b; Cooper and Stanley, 1990). occurs in quartz-rich nodules within metasomati- As minute grains, with bismuthinite and laita- cally altered basalt at Botallack, St. Just, Corn- karite, at Coniston mines, Cumbria (Stanley and wall (Van Marcke de Lummen, 1986b). Vaughan, 1982).

Hydrohetaerolite Tetragonal Josgite-B Bi4Te2S Trigonal Zn2Mn408.H20 See under joseite-A and ingodite, above. On calcite in oxidised veinstuff from Copper- thwaite vein, Swaledale, North Yorkshire (NHM Kahkite Fe2(AsO4)2.7H20 Monoclinic identification, 1968, G. Ryback specimen). [Also Green botryoidal crusts with zeunerite, King's from Ballygown South mine, Silvermines, Co. Wood mine, Buckfastleigh, Devon; pale green Tipperary, Eire, mixed with coronadite, as thin crusts, South Terras mine, St. Stephen-in-Bran- black crusts on limonite containing hemimorphite nel, Cornwall (NHM identifications, 1982 and (NHM identification, 1992, G. Ryback 1984, R. W. Barstow and A. L. Ellis specimens, specimen).] respectively).

Idaite Cu3FeS 4 (?) Hexagonal Kentrolite Pb2Mn2Si209 Orthorhombic As a secondary sulphide in a mineralized fault A thin red plate on matrix from Higher Pitts in Triassic Dolomitic Conglomerate at Clevedon, Farm, Priddy, Somerset (NHM identification, Avon (Ixer, 1986). A mineral close to idaite was 1982, A.W.G. Kingsbury specimen). Listed also reported from Alderley Edge, Cheshire (Ixer from Colemans quarry, Holwell, Somerset (Ala- and Vaughan, 1982). baster, 1990a).

Ikaite CaCO3.6H20 Monoclinic K~sterite Cu2(Zn,Fe)SnS4 Tetragonai Although ikaite itself has not been recorded With stannoidite and rare zincian stannite at St. from the British Isles, it was the parent mineral of Michael's Mount, Marazion, Cornwall; rarely at the long-known calcite pseudomorphs called 'jar- Cligga Head, Perranzabuloe, Cornwall, with rowite' or 'pseudogaylussite', from the River stannite (Moore and Howie, 1984). 'Isostannite' Tyne at Jarrow, Tyne and Wear, and from the from Cligga Head (Claringbull and Hey, 1955) is Clyde at Cardross, Strathclyde, Scotland (Shear- krsterite (Kissin and Owens, 1975; Corazza et al., man and Smith, 1985). 1986) or ferrok~sterite (Kissin and Owens, 1989). [A very old analysis by Johnston referring to 'a Ingodite Bi2TeS Hexagonal kind of tin pyrites' from St. Michael's Mount, and With jos~ite-A, jos~ite-B, and bismuthinite, as showing Zn > Fe, is given by De ia Beche (1839) a minor component of 'grfinlingite' from Carrock without other details.] mine, Caldbeck Fells, Cumbria (Zav'yalov and Begizov, 1981a; Cooper and Stanley, 1990). Kidwellite Monoclinic NaFe93+ (PO4)6( OH)10.5H20 Isomertieite Pdll SO2As2 Cubic Small globules of radiating greenish-yellow Anhedral to euhedral grains (-<15 p.m) asso- fibres, with chalcosiderite in quartz-goethite ciated with gold at Hope's Nose, Torquay, matrix from Wheal Phoenix, Linkinhorne, Devon; mertieite-II occurs similarly (Clark and Cornwall (Braithwaite and Corke, 1980). Criddle, 1982). Klockmannite CuSe Hexagonal Ixiolite (?) (Ta,Nb,Fe,Mn,Sn)204 Monoclinic See under clausthalite. In granite pegmatite at Megiliggar Rocks, Tremearne, Breage, Cornwall; XRD pattern Ktenasite Monoclinic identical with or close to that of ixiolite, but (Cu,Zn)5(SO4)2(OH)6.6H20 chemical confirmation is required (NHM identifi- Aggregates of tiny blue-green tabular crystals cation, 1987, N. Talbot specimen). with gypsum, namuwite, schulenbergite, and MINERALS FROM THE BRITISH ISLES 267 serpierite, Smallcleugh mine, Nenthead, Cum- Melanotekite Pb2Fe 3+ Si209 Orthorhombic bria; identified by XRD (Rust, 1991a). This Much altered yellow relict crystals in limestone- material, also found at Brownley Hill mine, is in hosted replacement deposits of Fe and Mn oxides fact zinc-dominant, ranging in composition from at Merehead quarry, Somerset, and two localities the nearly pure zinc end-member to Cu:Zn at Westbury-on-Trym, Avon (Alabaster, 1985). nearly 1 : 1 (Livingstone, 1991). Listed from Colemans quarry, Holwell, Somerset (Alabaster, 1990a). Kuramite Cu3SnS 4 Tetragonal Grey granular metallic veins with possible Mereheadite covellite, stannoidite, etc., in granite from Gun- See under unnamed lead and lead-molyb- heath china clay pit, St. Austell, Cornwall; XRD, denum oxychlorides. optical, and electron microprobe identification (C. J. Stanley, pers. comm., 1989; NHM speci- Mertieite-H Pds(Sb,As)3 Trigonai men from Capt. E. J. P. Sutton). See under isomertieite. Laitakarite Bi4(Se,S)3 Trigonal MetakOttigite (?) Triclinic Grains (<50 ~tm) associated with bismuth and (Zn,Fe 3+,Fe2+)3(AsO4)2.8(H20,OH) bismuthinite, Bonser vein, Coniston mines, Cum- bria (Stanley and Vaughan, 1982). ]First selenium Minute yellowish-brown acicular crystals in mineral from the British Isles.} cavities in quartz, Sandbeds Gill, Bassenthwaite, Cumbria; XRD indicates metakOttigite or a Manganocolumbite Orthorhombic metak~Sttigite-symplesite intermediate (NHM MnNb206 identification, 1988, N. Thomson specimen). Minute inclusions in minerals replacing wolfra- Metasideronatrite Orthorhombic mite at Carrock mine, Caldbeck Fells, Cumbria; Na2Fe3+(SO4)2(OH).H20 highly ferroan, with notable amounts of W, Ti and Sc (Beddoe-Stephens and Fortey, 1981). Yellow botryoidal material with gypsum and Minute crystals showing complex oscillatory pyrite on a specimen from Trerubies Cove, near zoning, from pegmatites in the Meldon aplite, Delabole, Cornwall, is a mixture of sideronatrite Devon; composition within much of the manga- and metasideronatrite; other specimens carry nocolumbite-manganotantalite range (von Knor- only sideronatrite (NHM identifications, 1985, ring and Condliffe, 1984). Cf. ferrocolumbite. R. E. Starkey specimens).

Manganosite MnO Cubic Metavoltine Hexagonal K2Na6Fe 2+ Fe3+ (804) 1202 . 18H20 Pinkish red fibres on a specimen of chrysoberyl said to come from Ford Farm quarry, Sticklepath, Sulphur-yellow botryoidal crust, from cliffs Devon, possibly contain manganosite as a consti- near the sea-level adit, Wheal Edward, St. Just, tuent along with quartz, possible pseudorutile, Cornwall (NHM identification, 1981, G. Ryback and an unidentified 7 A mineral (NHM identifica- specimen). tion, 1982, A. W. G. Kingsbury specimen). Also shown to be a constituent of black crystalline Moolooite CuC204.nH20 Orthorhombic material from Roughton Gill, Caldbeck Fells, Vivid blue crystalline inclusions (-<0.5 mm) in Cumbria (NHM identification, 1986, Mr. Mings the lichen Lecidea inops from Coniston mines, specimen). Cumbria (Chisholm et al., 1987).

Marialite 3NaA1Si3Os.NaCI Tetragonal Natromontebrasite Triclinic White fibrous compact aggregates with tourma- (Na,Li)Al(PO4)(OH,F) line from the New Aplite quarry, Meldon, Devon Alteration product of amblygonite in granite (A. W. Scoble specimens in NHM, presented in pegmatite at Megiliggar Rocks, Tremearne, 1959). [The variety dipyre appeared in the Fifth Breage, Cornwall; identification based on elec- Supplementary List.] tron microprobe analyses (Stone and George, 1983). Mawsonite Cu6Fe2SnS8 Tetragonal Replacing small grains of stannoidite in the Natron (?) Na2CO 3.10H20 Monoclinic Hensbarrow granite stock, St. Austell, Cornwall An old entry in the locality card-index of the (Manning, 1983). NHM collections refers to natron from Botallack 268 G. RYBACK AND P. C. TANDY mine, St. Just, Cornwall, but a recent (1990) Parnauite Orthorhombie search in the collections failed to find any Cu9(AsO4)2(SOa)(OH)I0.7H20 specimens. Listed by Wolioxail (1989) on the Bright green crystalline, on an old specimen of basis of this record. spangolite from Wheal Gorland, Gwennap, Cornwall (A. Russell Collection in NHM; XRD Naumannite Ag2Se Orthorhombic identification, 1981). Subsequently confirmed on See under clausthalite. specimens from five other localities in Cornwall and Devon, submitted by several collectors (NHM identifications). [Also, as pale turquoise Nordstrandite AI(OH)3 Triclinic spherules with tennantite and with clinotyrolite, Earthy, white or pale cream, associated with at Tynagh mine, Co. Galway, Eire (A. de Hailer brown Fe oxides and black manganiferous specimen; P. Perroud, pers. comm., 1989).] matter, in nodules from the infill of solution pipes in Upper Chalk at Newhaven, East Sussex Penroseite (Ni,Co,Cu)Se2 Cubic (Wilmot and Young, 1985). See under clausthalite.

Para-alumohydrocalcite Pharmacolite CaHAsO4.2H20 Monoclinic CaAI2( CO3)2(OH)4.6H20 See under picropharmacolite. With allophane, scarbroite, and dundasite in fissure-fill in limestone, Hampstead Farm quarry, Philipsburgite Monoclinic Chipping Sodbury, Avon (Alabaster, 1989a, (Cu,Zn)6(AsO4,PO4)2(OH)6.H20 1990b). As a vein 8 mm wide in ferruginous Grass-green globular aggregates (-<2mm) sandstone from a quarry at Boughton, near associated with malachite in cavities in vein Northampton; identified by XRD (Dept. of quartz, Potts, Gill baryte mine, Caldbeck Fells, Geology, Leicester University specimen; J. Faith- Cumbria (Braithwaite and Ryback, 1988); also full, pers. comm., 1989). from Low Pike (Young et al., 1990) and Driggith mine (N. Hubbard specimen, identified by IR, Paracostibite (?) CoSbS Orthorhombic 1990). Thin botryoidal crusts in small cavities in A specimen supposedly from Wheal Cock, St. quartz, Wheal Carpenter, Gwinear, Cornwall Just, Cornwall (Kingsbury Collection in NHM) (NHM identification, 1989, N, Hubbard has been analysed (Criddle and Stanley, 1986) specimen). and confirmed by XRD; but it may be from another locality and the occurrence needs to be Phosphuranylite (?) Ortborhombic confirmed (C. J. Stanley, pers. comm., 1990). Ca(UO2)3(PO4)z(OH)z.6H20 Bright yellow crystalline crusts on shale from Parahopeite Zn3(PO4)z.4H20 Triclinic Wheal Edward, St. Just, Cornwall; XRD pattern Recorded as having been found by A. W. G. near that of phosphuranylite, but chemical confir- Kingsbury [in the 1950s-60s] at Roughton Gill, mation would be desirable (NHM specimen, Caldbeck Fells, Cumbria (Hartley, 1984); and at collected by R. W. Barstow). Turf Pits mine, Grassington Moor, and Cockhill mine, Bewerley, both in North Yorshire (Dun- Phurcalite Orthorhombic ham and Wilson, 1985). Ca2(UO2)3(POa)2(OH)4.4H20 Microscopic yellow bladed crystals, often in Pararammelsbergite (?) Orthorhombic radiating clusters, with autunite on joints in NiAs2 granite, Merrivale quarry, Dartmoor, Devon (Braithwaite et al., 1989b). One of the 'unidenti- A nickel diarsenide with c. 5% Co and showing fied uranium mineral(s)' from Merrivale men- the optical properties of pararammelsbergite is tioned in the Fourth Supplementary List. noted as a trace component of the mineralisation at Alderley Edge, Cheshire (Ixer and Vaughan, Picropharmacolite Triclinic 1982). Ca4MgHz(AsO4)4 . 11H20 Crust of white satiny fibres and massive, with Parkinsonite pharmacolite, weilite, wapplerite, etc., from See under unnamed lead and lead-molyb- Wanthwaite mine, St. John's in the Vale, Cum- denum oxychlorides. bria (NHM specimens, see Young, 1987). [Also MINERALS FROM THE BRITISH ISLES 269 from Silver Glen, Alva, Clackmannanshire, Scot- Redondite (Messbach-type variscite) land, with erythrite and Co arsenides (S. Moreton Orthorhombic specimen, XRD identification by Royal Museum A1PO4.2H20 of Scotland).] Identified by XRD at Pitts Cleve quarry, Tavistock, Devon, and Treore mine, St. Teath, PlanchEite Orthorhombic Cornwall (A. W.G. Kingsbury specimens in CusSi8022(OH)4.H20 NHM). [The Devon material was probably that Three A. W. G. Kingsbury specimens in NHM, exhibited as variscite at a Mineralogical Society identified by XRD; blue compact radiating meeting in 1962 (Mineral. Mag., 33, lxiv).] sphernles up to 8 mm across coated with chrysocolla, Driggith mine, Caldbeck Fells, Cumbria Reichenbachite Monoclinic (collected 1952; cf. Hartley, 1984, and Young, Cu5(PO4)2(OH)4 1987); dark blue grains in turquoise, Gunheath china clay pit, St. Austell, Cornwall (collected Many specimens of pseudomalachite from the 1958); and a broken matrix-free blue compact Old Gunnislake mine, Calstock, Cornwall, have radiating spherule several mm across, Engine been re-identified as the recently described poly- vein, Alderley Edge, Cheshire (collected 1963). morph reichenbachite (R. S. W. Braithwaite and G. Ryback, unpublished work). Pollucite (Cs,Na)2A12Si4012. H20 Cubic Roquesite CuInS2 Tetragonal Colourless anhedral grains in pegmatite lenses in aplite, Meldon, Devon (Kingsbury, 1964). Inclusions (<0.3 mm) in chalcosine, Geevor mine, St. Just, Cornwall; analysis and optical data (Criddle and Stanley, 1986). [First indium Potassium magnesio-arfvedsonite mineral from the British Isles.] A new amphibole, occurring as a minor component of a minette intrusion at Pendennis Point, Roscherite Monoclinic Falmouth, Cornwall (Hall, 1982). Ca(Fe 2+ ,Mn)2Be3(PO4)3(OH)3.2H20 Dark sage-green, radiating, forming spherules Pseudobolgite Tetragonal up to 5 mm across, on crusts of minute carbonate- PbzCu4Cil0(OH)s.2HeO fluorapatite crystals lining cavities in quartz, See under bolrite. Clitters United mine, Calstock, Cornwall; close to the iron end-member in composition. Also Pseudorutile (?) Fe2Ti309 Hexagonal found as fiat radiating aggregates on joints in quartz (Clark et al., 1983). See under manganosite.

Sadanagaite Monoclinic Pyrostilpnite Ag3SbS3 Monoclinic (K,Na) Ca2(Fe~+,Mg,AI,Fe 3+,Ti)5 Red-brown platy crystals on quartz, St. Teath, (Si,A1)sO22(OH)2 Cornwall; identified by XRD (NHM specimen, collected by A. W. G. Kingsbury in 1959). From the amphibole zone of skarns at Botal- lack, St. Just, Cornwall (Van Marcke de Lum- men, 1985). Queitite Monoclinic Zn2Pb4(SO4) (SiO4) (Si207) Sal#eite (?) Monoclinic White silky botryoidal crust on leadhillite and Mg(UO2)2(PO4)2.10H20 susannite, Red Gill mine, Caldbeck Fells, Cum- bria (Braithwaite et al., 1989a). [Also from Lead- Incompletely characterised uranium minerals hills, south Scotland (Jackson, 1990).] giving XRD patterns matching those of sal6eite, or similar to those of salreite and nov~irekite, occur in Cornwall at Wheal Edward, St. Just; Ranci#ite Hexagonal (?) Wheal Basset, Redruth; and Roughtor Great (Ca,Mn2+)Mn44+O9.3H20 Consols, St. Clether (NHM identifications). Pink-brown powdery from near Newbiggin, Specimens have been found by several collectors. Teesdale, Durham (precise locality not known; [Exact identification difficult since there are no NHM specimen, XRD identification, 1985). adequate published X-ray data for pure salreite.] 270 G. RYBACK AND P. C. TANDY SchrOckingerite Triclinic Sternbergite (?) AgFe2S3 Orthorhombic NaCa3(UO2)(CO3)3(SO4)F. 10H20 See under argentopyrite. Greenish yellow spherules (-<4 mm) composed of minute pseudohexagonal plates, with anderso- Strashimirite Monoclinic nite and gypsum, on walls of a level in Geevor Cus(AsO4)4(OH)4.5H20 mine, St. Just, Cornwall (Elton and Hooper, Pale blue compact, from Wheal Gorland, 1992). Gwennap, Cornwall (NHM identification, 1985, D. Lloyd specimen). [Also from Tynagh mine, Schulenbergite Trigonal Co. Galway, Eire, as pale blue-green fluffy (Cu,Zn)7(SO4,fO3)2(OH) t0.3H20 spherules, sometimes enclosing olivenite (Sarp Rare small blue-green crystals with serpierite et al., 1987; P. Perroud, pers. comm., 1989).] and namuwite, Waterbank mine, Ecton, Staf- fordshire (NHM identification, 1987, S. A. Rust Strengite FePO4.2H20 Orthorhombic specimen), and similarly from Smallcleugh mine, Pinkish globular aggregates on yellowish Nenthead, Cumbria (Livingstone etal., 1990). fibrous cacoxenite in goethite, Stowe's shaft, From Prince of Wales mine, Calstock, Cornwall Wheal Phoenix, Linkinhorne, Cornwall; and as (NHM identification, J. Betterton specimen). pale purple globules with goethite and cacoxenite [Also from Wales at Nant-y-Cagal (Eaglebrook) from Burdell Gill, Caldbeck Fells, Cumbria mine, Ceulanymaesmawr, Dyfed, and Dyfngwm (NHM specimens, collected by A.W.G. mine, Penegoes, Powis (NHM identifications, Kingsbury; exhibited at a Mineralogical Society S. A. Rust specimens).] meeting in 1962, Mineral. Mag., 33, lxiv). From Carrock mine, Caldbeck Fells (D. McCallum, pers. comm. in Cooper and Stanley, 1990), and Schultenite PbHAsOa Monoclinic Gravel Hill mine, Perranzabuloe, Cornwall (C. A spray of colourless blades (-<1 mm) in cavity Sparrow, pers. comm., 1991; XRD identification in white quartz from Deer Hills vein, Caldbeck by Monica Price, Oxford). [Also from Ballycor- Fells, Cumbria (Symes et al., 1991). mick, Shanagolden, Co. Limerick, Eire, as clusters of pale-lilac needles with cacoxenite (N. Sodium-zippeite Orthorhombic Hubbard specimen, IR identification by G. Na4(UO2)6(SO4)3(OH) 10.4H20 Ryback, 1991).] All specimens of 'zippeite' from Geevor mine, Strunzite MnZ+Fe3+ (PO4)2(OH)2.6H20 Triclinic St. Just, Cornwall, examined so far have proved to be sodium-zippeite (N. J. Elton and J.J. Straw-yellow acicular (1-2 mm) in cavities in Hooper, pers. comm., 1992). goethite, Gravel Hill mine, Perranzabuloe, Corn- wall (NHM identifications, 1986-87, M. Merry and C. Sparrow specimens). Cf. ferrostrunzite. Stannite, zincian From Wheal Agar, Iilogan, Cornwall, contain- Sweetite Zn(OH)2 Tetragonal ing 3.1% Zn (Springer, 1968). Small grains (with A new species, from Milltown quarry, near 5.1% Zn) in the Hensbarrow granite stock, St. Ashover, Derbyshire; whitish, transparent or Austeli, Cornwall (Manning, 1983). From St. translucent, bipyramidal or occasionally tabular Michael's Mount, Marazion (3-4% Zn) and crystals up to 1 mm in size, with fluorite, calcite Cligga Head, Perranzabuloe (5~5% Zn), Corn- and baryte (Clark et al., 1984; Rust, 1991b). This wall (Moore and Howie, 1984). These papers was the first of four polymorphs of Zn(OH)2 report electron microprobe analyses. Cf. found by S. A. Rust at this locality; cf. ashoverite, ferrok~sterite. unnamed zinc hydroxide, and wtilfingite.

Stannoidite Orthorhombic Symplesite (?) Triclinic Cus(Fe,Zn)3SnzS12 Fe3(AsO4)2.8H20 With stannite and mawsonite as small grains in A member of the symplesite-metavivianite the Hensbarrow granite stock, St. Austell, Corn- series, probably symplesite, forms rare pale wall (Manning, 1983). Seen abundantly, closely greenish flat radiating aggregates on quartz from associated with k~sterite, in polished sections of dumps below Netherrow Brow, Caldbeck Fells, the mineralised veins at St. Michael's Mount, Cumbria (NHM identification, 1987, B. Young Marazion, Cornwall (Moore and Howie, 1984). specimen; see Cooper and Stanley, 1990). Also at MINERALS FROM THE BRITISH ISLES 271 Wanthwaite mine, St. John's in the Vale, Cum- Triistedtite Ni3Se4 Cubic bria (NHM specimen, see Young, 1987). Cf. See under clausthalite. metak0ttigite. Tyrrellite (Cu,Co,Ni)3Se4 Cubic Tennantite, bismuthian (?) See under clausthalite. An analysis and optical data are given for tennantite with 7.4% Bi, supposedly from Bick- noller quarry, near Watchet, Somerset (Criddle Umangite Cu3Se2 Tetragonal and Stanley, 1986), but the specimen (Kingsbury See under clausthalite. Collection in NHM) may be from another locality (C. J. Stanley, pers. comm., 1990). Unnamed copper calcium sodium phosphate hydrate Thenardite Na2SO4 Orthorhombic Sprays of small aquamarine-blue bladed White or colourless curved bladed crystals c. crystals on chrysocolla from Roughton Gill mine, 1 cm long, in abandoned workings of Billingham Caldbeck Fells, Cumbria; may be a new species anhydrite mine, Cleveland (Raymond, 1959). (Cooper and Stanley, 1990). An apparently Thick, finely crystalline, colourless or white identical mineral occurs at Judkins quarry, efflorescences, Mountfield gypsum mine, Battle, Nuneaton, Warwickshire (Ince et al., 1990). East Sussex (Young et al., 1985). Unnamed fibrous iron sulphide Tiemannite HgSe Cubic An incompletely characterised mineral, similar From Hope's Nose, Torquay, Devon (see to the fibrous iron sulphide from Canada and under clausthalite). [Also from old mine dumps in Cyprus (Jambor, 1969; Harris and Vaughan, Silver Glen, Alva, Central Region, Scotland 1972), occurs with valleriite at Pol Cornick, (Parnell, 1988b).] Mullion, Lizard, Cornwall (Clark, 1970).

Titanite (sphene), stannian Unnamed lead and lead-molybdenum From skarn at Botallack, St. Just, Cornwall; oxychlorides -<7.0% SnO2 (Van Marcke de Lummen, 1985, Work is continuing on the two new species from 1986a). Accessory in granite near the Birch Tor Merehead quarry, Somerset, reported in the and Vitifer mines, Dartmoor, Devon; -<4.6% Fourth Supplementary List. One of these appears SnO 2 (Alderton, 1988). to have a very complicated and possibly novel structure. Of the working names 'mereheadite' Triphylite LiFePO4 Orthorhombic (yellow) and 'parkinsonite' (red), the latter has Intergrown with triplite in granite pegmatite at recently been approved by the IMA. The appear- Megiliggar Rocks, Tremearne, Breage, Cornwall ance of these names in the literature (Alabaster, (Stone and George, 1983). 1989b) and their popular use among mineral dealers and collectors, prior to any publication Triplite (Mn,Fe,Ca)2PO4(F,OH) Monoclinic defining the species, is regrettable. Dark brown, irregular piece about 5 x 2 cm across, in granite pegmatite at Megiliggar Rocks, Unnamed lead oxide hydrate Tremearne, Breage, Cornwall; composition vari- Rare white cubo-octahedral crystals in an able (George etal., 1981; Stone and George, oxidised vein exposure at Milltown quarry, near 1983). [Also from lithium-rich pegmatite at Glen- Ashover, Derbyshire; XRD pattern matches that buchat, Aberdeenshire, Scotland (Macpherson of synthetic 3PbO.H20 (Rust, 1991b). and Livingstone, 1982).] Unnamed silver iron sulphides (?) Tristramite Hexagonal 4+ 3+ Optical and electron microprobe examination (Ca,U ,Fe )(PO4,SO4,CO3).l.5-2H20 of argentiferous nickel ore from Tynebottom A new species, forming greenish fine-grained mine, near Alston, Cumbria, revealed two minor aggregates of acicutar to fibrous crystals in quartz- phases: AgFeS2, forming lamellar intergrowths pitchblende veins at Wheal Trewavas, Trewavas with chalcopyrite; and AgFesSI> an alteration Head, Breage, Cornwall; also at several other old product of argentopyrite (Ixer and Stanley, 1987; mines in Cornwall (Atkin et al., 1983). may not be from this locality, cf. argentopyrite). 272 G. RYBACK AND P. C. TANDY Unnamed zinc analogue of ktenasite Whewellite CaC~O4.H20 Monoclinic See under ktenasite. Colourless glassy crystalline in coal, with calcite, from Mealbank quarry, Ingleton, North Unnamed zinc hydroxide Yorkshire (NHM identification, 1964, A. W. G. A white radiating acicular mineral, identical Kingsbury specimen). [Also, with glushinskite, with synthetic y-Zn(OH)2, occurs together with under the lichen Lecanora atra at Mill of John- other polymorphs of Zn(OH)2 in an oxidised vein ston, near Insch, NE Scotland (Wilson etal., exposure at Milltown quarry, near Ashover, 1980).] Derbyshire (Clark et al., 1988; Rust, 1991b). Cf. sweetite. Wickmanite MnSn(OH)6 Cubic Orange-yellow octahedra (-<1 mm) in cavities Uranopilite Monoclinic in axinite, Wheal Cock Zawn, St. Just, Cornwall (UO2)6(SO,~)(OH)10.12H20 (Hubbard, 1989). From St. Just, Cornwall (Chemical analysis by Nova~ek, 1935, quoted by Palache et al., 1951). WMfingite Zn(OH)2 Orthorhombic Orange encrustation on altered uraninite-bearing A small star-like cluster of colourless crystals in veinstuff from Wheal Owles, St. Just (Frondel, an oxidised vein exposure at Milltown quarry, 1952). near Ashover, Derbyshire (Clark etal., 1988; Rust, 1991b). Cf. sweetite. Violarite FeNi2S4 Cubic With pyrite and marcasite as microscopic Yarro wire Cu9S s Hexagonal loosely intergrown aggregates within chalcopyrite Grains (<0.5 ram) replacing bornite and chal- or silver minerals at Tynebottom mine, near cosine, Cannington Park, near Bridgwater, Alston, Cumbria (Ixer and Stanley, 1987; may Somerset; analysed (Criddle and Stanley, 1986; not be from this locality, cf. argentopyrite). C.J. Stanley, pers. comm., 1989). Probably ]Also, as an alteration product of pentlandite, at widespread as an alteration product of copper Talnotry, Newton Stewart, south Scotland (Stan- sulphides but previously referred to as 'blaubtei- ley etal., 1987); and from Esgair Hir mine, bender' covellite, which has now been character- Ceulanymaesmawr, Dyfed, Wales (Rust and ised as the species yarrowite and spionkopite. Mason, 1988).] Zwieselite Monoclinic Vochtenite Monoclinic (Fe 2+,Mn)2(POa)F (Fe 2+,Mg)Fe 3+(UO2)4(POa)4(OH ).12-13H20 Dark brown masses in pegmatite at Megiliggar A new species, occurring as small brown Rocks, Tremearne, Breage, Cornwall (NHM pseudoquadratic crystal aggregates at Wheal identification, 1987, N. Talbot specimen). Basset, Redruth, Cornwall (Zwaan et al., 1989).

Waylandite Trigonal References (Bi,Ca)A13(PO4,SiO4)2(OH)6 Alabaster, C. (1985) Melanotekite from the Bristol Small (<0.5mm) colourless or brownish District. Proc. Bristol Nat. Soc., 45, 11-16.

crystals, and bluish crystalline bands, on bismu- -- (1989a) Alumohydrocalcite from the Bristol Dis- tite, Restormel mine, near Lostwithiel, Cornwall trict. J. Russell Soc., 2, No. 2, 5-10. (Clark et al., 1986). Tiny greenish blue crystals in -- (1989b) The Wesley mine: a further occurrence of cavities in goethite from Stowe's shaft, Wheal manganese oxide hosted lead oxychloride minerals in Phoenix, Cornwall, belong to the plumbogum- the Bristol District. Ibid., 29-47.

mite group, near waylandite (NHM identifica- -- (1990a) Alstonite and barytocalcite from Llantri- tion, 1985, N. Hubbard specimen). sant, South Wales, and barytocalcite from Holwell, Mendip Hills, England. Ibid., 3, No. 1, 1-16. Weddellite CaC204.2H20 Tetragonal (1990b) New occurrences of secondary aluminium minerals from the Bristol District. Ibid., 3, No. 2, Small (-<1 mm) modified flattened bipyramids 49-59. in the oxidised vein exposure in Milltown quarry, Alderton, D. H. M. (1988) Calc-silicate minerals from near Ashover, Derbyshire (Rust, 1983). the Dartmoor granite. Mineral. Mag., 52, 527-9. -- and Jackson, N. J. (1978) Discordant calc-silicate Weilite CaHAsO4 Triclinic bodies from the St. Just aureole, Cornwall. Ibid., 42, See under picropharmacolite. 427-34. MINERALS FROM THE BRITISH ISLES 273 Andrew, A. R. (1910) The geology of the Dolgelley Zn(OH)2 from Milltown, Ashover, Derbyshire. gold-belt, North Wales. Geol. Mag., 47, 159-71. Ibid., 52, 699-702. Atkin, D., Basham, I. R., and Bowles, J.. F. W. (1983) Clifford, J. A., Ryan, P., and Kucha, H. (1986) A Tristramite, a new calcium uranium phosphate of the review of the geological setting of the Tynagh rhabdophane group. Mineral. Mag., 47,393-6. orebody, Co. Galway. In Geology and Genesis of Beddoe-Stephens, B. and Fortey, N. J. (1981) Colum- Mineral Deposits in Ireland (C. J. Andrew et al., bite from the Carrock Fell tungsten deposit. Ibid., 44, eds.) 419-39. Irish Association for Economic Ge- 217-23. ology, Dublin. Benjamin, R. E. K. (1968) An axinite-epidote-tourma- Collins, J. H. (1892) A Handbook to the Mineralogy of line vein cutting amphibolite, western Connemara, Cornwall and Devon, 2nd edition. London. Eire. Ibid., 36, 747-50. Cooper, M. P. and Stanley, C. J. (1990) Minerals of the Bevins, R. E., Rowbotham, G., Stephens, F.S., English Lake District -- Caldbeck Fells. Natural Turgoose, S., and Williams, P. A. (1985) Lanthanite- History Museum Publications, London. (Ce), (Ce,La,Nd)2(CO3)3.SH20, a new mineral from Corazza, M., Corsini, F., and Tanclli, G. (1986) Wales, U.K. Am. Mineral., 70, 411-13. Stannite group minerals: investigation on stannite -- Symes, R. F., Horak, J. M., and Holyer, V. (1987) and k~sterite. Rend. Soc. ltal. Mineral. Petrol., 41, Hetaerolite from Eastern Cliff, Kennack Sands, 217-22. Cornwall: the first British occurrence. Mineral. Mag., Criddle, A. J. and Stanley, C. D., eds. (1986) The 51, 1720. Quantitative Data File for Ore Minerals, second issue. Braithwaite, R. S. W. and Cooper, B. V. (1982) British Museum (Natural History), London. Childrenite in South-West England. Ibid., 46, Davis, A. G. (1967) The mineralogy and phase equilib- 119-26. rium of Keuper Marl. Quart. J. Eng. Geol., 1, 25-38. -- and Corke, H. (1980) Kidwellite from Cornwall. Dean, A. C. (1982) First British occurrence of cumen- Ibid., 43, 952-3. g6ite. J. Russell Soc., 1, No. 1, 40-4l. Symes, R. F., Thomas, J. H., and Williams, P. A. -- and Ryback, G. (1988) Philipsburgite from the Caldbeck Fells and kipushite from Montana, and (1983) Cumeng6ite from Cornwall. Mineral. Mag., their infrared spectra. Ibid., 52, 529-33. 47, 235-6. Dearman, W. R. (1965) Bismuth and molybdenite from -- Cooper, M. P., and Hart, A. D. (1989a) Queitite, Meldon quarry, near Okehampton, Devon. Proc. a mineral new to Britain, from the Caldbeck Fells, l, 196-8. Cumbria. Ibid., 53, 508-9. Ussher Soe., De la Beche, H. T. (1839) Report on the Geology of -- Paar, W. H., and Chisholm, J. E. (1989b) Cornwall, Devon, and West Somerset. Geological Phurcalite from Dartmoor, Southwest England, and Survey, London. its identity with 'nisaite' from Portugal. Ibid., 583-9. Dines, H. G. (1956) The Metalliferous Mining Region of Buist, D. S., Gadalla, A. M. M., and White, J. (1966) South-west England. Geological Survey, London. Delafossite and the system Cu-Fe-O. Ibid., 35, Dunham, K. C. and Wilson, A. A. (1985) Geology <9]" 731-41. the Northern Pennine Orefield, vol. 2: Stainmore to Chaudhry, M. N. and Howie, R. A. (1969) Axinites Craven. British Geological Survey, London. from the contact skarns of the Meldon aplite, Dunn, P. J. (1990) Andrewsite and laubmannite Devonshire, England. Ibid., 37, 45-8. formally discredited. Am. Mineral., 75, 1197-9. Chisholm, J. E., Jones, G. C., and Purvis, O. W. (1987) -- Leavens, P. B., and Barnes, C. (1980) Magne- Hydrated copper oxalate, moolooite, in lichens. sioaxinite from Luning, Nevada, and some nomencla- Ibid., 51,715-18. ture designations for the axinite group. Mineral. Claringbull, G. F. and Hey, M. H. (1955) Stannite and Record, 11, 13-15. isostannite (Abstract). Mineral. Soe., London, E1Sharkawi, M. A. H. and Dearman, W. R. (1966) Tin- Notice No. 91. bearing skarns from the North-west border of the Clark, A. H. (1970) A probable second occurrence of Dartmoor Granite, Devonshire, England. Econ. Jambor's 'fibrous iron sulfide'. Am. Mineral., 55, Geol., 61,362-9. 283-4. Elton, N. J. and Hooper, J. J. (1992) Andersonite and Clark, A. M. and Criddle, A. J. (1982) Palladium schr6ckingerite from Geevor mine, Cornwall: two minerals from Hope's Nose, Torquay, Devon. species new to Britain. Mineral. Mag., 56, 124--25. Mineral. Mag., 46, 371-7. Embrey, P. G. and Symes, R. F. (1987) Minerals of

-- Fejer, E. E., Couper, A. G., von Knorring, O., Cornwall and Devon. British Museum (Natural Turner, R. W., and Barstow, R. W. (1983) Iron-rich History), London. roscherite from Gunnislake, Cornwall. Ibid., 47, Fortey, N. J., Ingham, J. D., Skilton, B. R. H., Young, 81-3. B., and Shepherd, T. J. (1984) Antimony mineralisa- ---- and Jones, G. C. (1984) Sweetite, a new tion at Wet Swine Gill, Caldbeck Fells, Cumbria. mineral from Derbyshire. Ibid., 48, 267-9. Proc. Yorks. Geol. Soc., 45, 59--65. -- Couper, A. G., Embrey, P. G., and Fejer, E. E. Frondel, C. (1952) Studies of uranium minerals (X): (1986) Waylandite: new data, from an occurrence in uranopilite. Am. Mineral., 37,950-9. Cornwall, with a note on 'agnesite'. Ibid., 50,731-3. George, M. C., Stone, M., Fejer, E. E., and Symes,

-- Fejer, E. E., Cressey, G., and Tandy, P. C. (1988) R.F. (1981) Triplite from Megiliggar Rocks, Ashoverite, a new mineral, and other polymorphs of Cornwall. Mineral. Mag., 44, 236-8. 274 G. RYBACK AND P. C. TANDY Gramaccioli, C. (1955) La presenza di un vanadato di some Aspects of the Geology of Cornwall and Devon uranio--identificabile con la carnotite--nella miniera (K. F. G. Hosking and G. J. Shrimpton, eds.), 247- inglese di South Terras (Cornovaglia). Natura 66. Royal Geological Society of Cornwall, Truro. (Milano), 46, 30-2. Kissin, S. A. and Owens, D. R. (1975) New data on Greg, R. P. and Lettsom, W. G. (1858) Manual of the stannite and related sulfide minerals (Abstract). Can. Mineralogy of Great Britain and Ireland. London. Mineral., 13, 309. Reprinted with additions, 1977, Lapidary Publica- --- (1989)The relatives of stannite in the light of tions, Kent. new data. Ibid., 27, 673-88. Hall, A. (1982) The Pendennis peralkaline minette. Livingstone, A. (1991) The zinc analogue of ktenasite Mineral. Mag., 45,257-66. from Smallcleugh and Brownley Hill mines, Nent- Harris, D. C. and Vaughan, D. J. (1972) Two fibrous head, Cumbria. J. Russell Soc., 4, No. 1, 13-15.

iron sulfides and valleriite from Cyprus with new data -- Bridges, T. F., and Bevins, R. E. (1990) Schulen- on valleriite. Am. Mineral., 57, 1037-52. bergite and namuwite from Smallcleugh mine, Nent- Harrison, R. K., Snelling, N. J., Merriman, R.J., head, Cumbria. Ibid., 3, No. 1, 23-4. Morgan, G. E., and Goode, A. J. J. (1977) The Wolf Macpherson, H. G. (1983) References for, and updat- Rock, Cornwall: new chemical, isotopic age and ing of. L. J. Spencer's first and second supplementary palaeomagnetic data. Geol. Mag., 114, 249-64. lists of British minerals. Mineral. Mag., 47, 243-57.

--Old, R. A., Styles, M. T., and Young, B. R. (1983) -- and Livingstone, A. (1982) Glossary of Scottish Coffinite in nodules from the Mercia Mudstone group mineral species 1981. Scott. J. Geol., 18, 1-47. (Triassic) of the IGS Knowle borehole, West Mid- Manning, D. A. C. (1983) Disseminated tin sulphides in lands. Rep. Inst. Geol. Sci., 83/10, 13-16. the St. Austell granite. Proc. Ussher Soc., 5,411-16. Hartley, J. (1984) A list of minerals associated with the Merriman, R. J. and Roberts, B. (1985) A survey of ore deposits of the Caldbeck Fells, Cumbria. Trans. white mica crystallinity and polytypes in pelitic rocks Leeds Geol. Assoc., 10, No. 3, 22-39. of Snowdonia and Llyn, North Wales. Mineral. Mag., Hodkinson, I. P. and Clark, A. M. (1977) Columbite 49, 305-19. from St. Austell, Cornwall. Mineral. Mag., 41,131-2. Moore, F. and Howie, R. A. (1984) Tin-bearing Hubbard, N. (1989) Wickmanite from Whealcock sulphides from St. Michael's Mount and Cligga Head, Zawn, Botallack, Cornwall. Ibid., 53, 388. Cornwall. Ibid., 48, 389-96. Ince, F. (1986) The first British occurrence of cyrilovite Myall, M. J. (1979) The clay mineralogy of the Rhaetic and a second British locality for chalcosiderite. transgression in Somerset--environmental and strati- J. Russell Soc., 1, No. 4, 127--8. graphical implications. Proc. Ussher Soc., 4, 303-11. -- Starkey, R. E., and Wooldridge, J. (1990) The Palache, C., Berman, H., and Frondel, C. (1951) geology and mineralogy of Judkins quarry, Warwick- Dana's Syst. Min., 7th edn., vol. 2, p. 582. Wiley and shire. UK J. Mines & Minerals, No. 10, 8-13. Sons. lxer, R. A. (t986) The ore-mineralogy and parageneses Parnell, J. (1988a) The mineralogy of red bed uranium- of the lead-zinc-fluorite-baryte orefields of the vanadium mineralization in the Permo-Triassic of English Pennine and Mendip Hills. In Mineral Belfast. Irish J. Earth Sci., 9, 119-24.

Parageneses (S. S. Augustithis, ed.), 179-210. --(1988b) Mercury and silver-bismuth selenides at

-- and Stanley, C. J. (1980) Mineralization at Le Alva, Scotland. Mineral. Mag., 52,719-20. Pulec, Jersey, Channel Islands. Mineral. Mag., 43, Peacock, M. A. (1941) Jos6ite, grtinlingite, oruetite. 1025-9 (see Addendum, p. 1029). Univ. Toronto Stud., Geol. Ser., 46, 83-105.

-- -- (1987) A silver-nickel-cobalt mineral asso- Peacor, D. R. and Dunn, P. J. (1985) Sodium- ciation at Tynebottom mine, Garrigill, near Alston, pharmacosiderite, a new analog of pharmacosiderite Cumbria. Proc. Yorks. Geol. Soc., 46, 133-9. from Australia, and new occurrences of barium-

-- and Vaughan, D. J. (1982) The primary ore pharmacosiderite. Mineral. Record, 16, 121-4. mineralogy of the Alderley Edge deposit, Cheshire. Poole, E. G. and Whiteman, A. J. (1966) The Geology Mineral. Mag., 46, 485-92. of the Country around Nantwich and Whitechurch.

-- Stanley, C. J., and Vaughan, D. J. (1979) Cobalt-, Geological Survey, London. nickel-, and iron-bearing sulpharsenides from the Pye, K. (1981) Marshrock formed by iron sulphide and North of England. Ibid., 43, 389-95. siderite cementation in saltmarsh sediments. Nature, Jackson, B. (1990) Queitite, a first Scottish occurrence. 294, 650--2.

Scott. J. Geol., 26, 57-8. -- (1984) SEM analysis of siderite cements in Jambor, J. L. (1969) Coalingite from the Muskox intertidal marsh sediments, Norfolk, England. Intrusion, Northwest Territories. Am. Mineral., 54, Marine Geol., 56, 1-12. 437-47. (1988) An occurrence of akagan6ite (13- Kerndt, K. H. T. (1847) Ueber die Krystallform und FeOOH.C1) in recent oxidized carbonate concre- chemische Zusammensetzung der natiirlichen und tions, Norfolk, England. Mineral. Mag., 52, 125~5. kiinstlichen Verbindungen des Wolframmetalles. Raymond, L. R. (1959) Recent secondary minerals in J. prakt. Chem., 42, 81ff. the Billingham anhydrite mine. Ibid., 32, 172-5. King, R. J. (1983) The occurrence of galena in Rust, S. A. (1983) Weddellite--a new British mineral Leicestershire. J. Russell Soc., 1, No. 2, 27-47. species from Derbyshire. Mineral Realm, 3, No. 1, Kingsbury, A. W. G. (1964) Some minerals of special 22.

interest in south-west England. In Present Views of -- (1991a) Ktenastie, from Smallcleugh mine, Nent- MINERALS FROM THE BRITISH ISLES 275 head, Cumbria, the first British occurrence. UK geochemistry of skarn deposits in the Land's End J. Mines & Minerals, No. 9, 5. aureole, Cornwall. Proc. Ussher Soc., 6, 211-17. (1991b) The minerals of Milltown quarry, -- (1986a) Tin-bearing epidote from skarn in the Ashover, Derbyshire. Ibid., No. 10, 14-19. Land's End aureole, Cornwall, England. Can.

-- and Mason, J. S. (1988) The minerals of Esgair Hir Mineral., 24, 411-15. mine, Bwlch-y-Esgair Hir, Ceulanymaesmawr, -- (1986b) Fluor-bearing hydro-andradite from an Dyfed, Wales. Ibid., No. 5, 35-43. altered basalt in the Land's End area, SW England. Ryback, G. (1988) Alumohydrocalcite from Scarbor- Bull. Mineral., 109, 613-16. ough, North Yorkshire, and Weston Favell, North- Von Knorring, O. and Condliffe, E. (1984) On the amptonshire. J. Russell Soc., 2, No. 1, 9-12. occurrence of niobium-tantalum and other rare- Saich, D. A. and Rust, S. A. (1987) Micro minerals clement minerals in the Meldon aplite, Devonshire. from a trial level in Wales. UK J. Mines & Minerals, Mineral. Mag., 48, 443-8. No. 3, 3-4. Weiss, S. (1989) Aktuelle Neufunde aus Cornwall. Sarp, H., Perroud, P., and de Haller, A. (1987) Lapis 14, No. 6, 40-1. Seconde occurrence de l'orthoserpirrite dans la mine de Tynagh (Irlande). Arch. Sei., Gen~ve, 40, 47-50. Whitfield, J. E. (1887) Analyses of some natural borates Scrivener, R. C., Cooper, B. V., George, M. C., and and borosilicates. Am. J. Sci., ser. 3, 34, 281-9. Shepherd, T. J. (1982) Gold-bearing carbonate veins Wilmot, R. D. and Young, B. (1985) Aluminite and in the Middle Devonian Limestone of Hope's Nose, other aluminium minerals from Newhaven, Sussex: Torquay (Abstract). Proc, Ussher Soc., 5, 393. the first occurrence of nordstrandite in Great Britain. Shearman, D. J. and Smith, A. J. (1985) Ikaite, the Proc. Geol. Assoc., 96, 47-52. parent mineral of jarrowite-type pseudomorphs. Wilson, M. J., Jones, D., and Russell, J. D. (1980) Proc. Geol. Assoc., 96, 305-14. Glushinskite, a naturally occurring magnesium oxa- Springer, G. (1968) Electronprobe analyses of stannite late. Mineral. Mag., 43, 837--40. and related tin minerals. Mineral_ Mag., 36, 1045-51. Wolloxall, T. (1989) Famous mineral localities--Botal- Stanley, C. J. and Vaughan, D. J. (1981) Native lack, Cornwall. UKJ. Mines & Minerals, No. 6, 4-11. antimony and bournonite intergrowths in galena from Young, B. (1987) Glossary of the Minerals of the Lake the English Lake District. Ibid., 44, 257-60. District and Adjoining Areas. British Geological -- -- (1982) Mineralization in the Bonser vein, Survey, Newcastle upon Tyne. Coniston, English Lake District: mineral assemb- -- Fortey, N. J., and Nancarrow, P. H. A. (1986) An lages, paragenesis, and formation conditions. Ibid., occurrence of tungsten mineralisation in the Eskdale 46, 343-50. intrusion, west Cumbria. Proc. Yorks. Geol. Soc., 46, -- Symes, R. F., and Jones, G. C. (1987) Nickel- 15-21. copper mineralization at Talnotry, Newton Stewart, Cooper, M. P., Nancarrow, P. H. A., and Green, Scotland. Mineral. Petrol., 37,293-313. D.I. (1990) Supergene minerals from Low Pike, -- Criddle, A. J., and Lloyd, D. (1990) Precious and Caldbeck Fells, Cumbria. J. Russell Soc., 3, No. l, base metal selenide mineralization at Hope's Nose, 25~8. Torquay, Devon. Mineral. Mag., 54, 485-93. -- Jones, G. C., Hart, A. D., Keller, P., and Lloyd, Young, B. R., Young, B., and Raine, A. T. (I985) D. (1991) Barstowite, 3PbC12.PbCO3.H20, a new Thenardite (Na2SO4), a mineral new to Britain, from mineral from Bounds Cliff, St. Endellion, Cornwall. Sussex and Cumbria. Ibid., 1, No. 3, 92-3. Ibid., 55, 121-5. Zav'yalov, E. N. and Begizov, V. D. (1981a) [The new Starkey, R. E. (1986) An occurrence of carbonate- bismuth mineral ingodite, Bi2TeS.] Zap. Vsesoyuz. cyanotrichite from Devon. J. Russel Soc., 1, No. 4, Mineral. Obshch., 110, 594-600. 121-2. (1981b) [Once more on the problem of Stone, M. and George, M. C. (1983) Some phosphate grtinlingite. 1 Ibid., 633-5. minerals at the Megiliggar Rocks, Cornwall. Proc. Zwaan, P. C., Arps, C. E. S., and de Grave, E. (1989) Ussher Soc., 5,428-31. Vochtenite, (Fe2+ ,Mg)Fe3+ [UO2/POa]a(OH). 12- Symes, R, F., Wirth, M., and Young, B. (1991) 13H20, a new uranyl phosphatc mineral from Wheal Schultenite from the Caldbeck Fells, Cumbria: the Basset, Redruth, Cornwall, England. Mineral. Mag., first British occurrence. Mineral. Mag., 54 (for 1990), 53, 473-8. 659. Van Marcke de Lummen, G. (1985) Mineralogy and ]Manuscript received 25 July 1991]