DOCSLIB.ORG

Sinkankasite, a New Phosphate from the Barker Pegmatite, South Dakota

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Sinkankasite, a New Phosphate from the Barker Pegmatite, South Dakota American Mineralogist, Volume 69, pages 380-3E2, 1984 Sinkankasite,a new phosphatefrom the Barker pegmatite, South Dakota DoNero R. Pencon Department of Geological Sciences University of Michigan, Ann Arbor, Michigan 48109 Pere J. DUNN Department of Mineral Sciences Smithsonian Institution, Washington, D.C. 20560 Wrrrnno L. Rosenrs, THoMAs J. CnMpenrl Museam of Geology South Dakota School of Mines and Technologl Rapid City, South Dakota 57701 eNo WIlua,u B. SIuruoNs Department of Earth Sciences University of New Orleans, New Orleans, Louisiana 70148 Abstract Sinkankasite, ideally HzMnAl(POa)z(OH). 6HzO, is a new mineral occurring as an alteration product of triphylite at the Barker pegmatite, Keystone, South Dakota. It is triclinic, spacegroup PT or Pl, with cell parametersa = 9.58(4), b :9.79(5), c : 6.88(4)4, a : 108.1(2),p: gg.6(3),y:98.7(3)',V : 590Q)A3,andZ= 2. Crvstalsare elongated on [fi)l], flattened on {100} and twinned on {100}. Sinkankasiteis transparent, colorless, has hardness4 and a good {100} cleavage.The observed and calculated densities are 2.27 and 2.25 glcm3,respectively. Optical parametersinclude: biaxial negative;2V (calc.) = 84o;a = l.5ll(2),F:1.529(2),y:1.544(2);dispersionrlv;cAY-ll".The_strongestlinesinthe powderdiffractionpatternare(d,IlIo,hk[):9.2,100, lfi); 5.41,50,111;5.06,60, lll;4.58, 40,zffi, lll;2.834, 40, 230;2.701,40, 130.The nameis in honor of Dr. John Sinkankas. Introduction approvedprior to publication by the Commissionon New Names' IMA' The mineral describedherein was first found in 1963by Minerals and Mineral WLR and examined as part of a study of the minerals of Crystallography the Barker pegmatite (formerly known as the Ferguson pegmatite), which is located east of Keystone, South Single crystals of sinkankasitewere studied using pre- Dakota. Preliminary examinationindicated that it was not cession and Weissenbergsingle-crystal diffraction meth- a known species.Our subsequentinvestigation has con- ods. The photogqphs showed that sinkankasiteis triclin- firmed that preliminary finding, and shown it to be a new ic, spacegroup Pl or Pl, with a : 9.5E(4),b : 9.79(5),c hydratedmanganesealuminumphosphatewhichisappar-:6.88(4)A, a = 108.1(2),F=99.6(3),1:98.7(3)',andV ently unrelated to other known phases. : 590(7)A3.All crystals studied are twinned by reflection We take pleasure in naming this new mineral in honor on {100}.Powder diffraction data, listed in Table l, were of Dr. John Sinkankas, in recognition of his numerous obtained using a polycrystalline sample in a 114.6 mm contributions to mineralogy, in particular the many books diameter Gandolfi camera, CuK" radiation and Si as an he has authored and his many diverse efforts on behalfof internal standard. The Iattice parameters listed above the education of amateur mineralogists. The holotype were obtained by least-squares refinement of powder specimen is preserved in the Smithsonian Institution difraction data. under catalog #149597. The mineral and the name were Sinkankasite crystals are less than 2-3 mm in length 0003-004)v84l0304-0380$02.00 3E0 PEACOR ET AL,: SINKANKASITE 381 Table l. X-ray powder diffraction data for sinkankasite Chemistry Sinkankasite was chemically analyzed using an ARL- I/Io* d (Calc ) hkl I/lo d(obs) serraqelectron microprobe with an operating voltage of 15 100 9.2 9.22 100 30 2.428 10 1T0 2.355 kV and a sample culrent of 0.025 pA, standardizedon l0 5.86 5.86 110 10 50 5.41 5.42 117 2.2L8 brass. The data were corrected using Bence-Albee fac- 60 5.06 5.05 1n 20 2.117 tors. The standardsused were montgomeryitefor Al, Ca, 40 4.s8 4.61 200 10 1.968 Mg, P; manganite for Mn; fluorapatite for F and horn- 4.58 lTT 2 1.884 20 4.13 4.14 LzL IO 1.839 blende for Fe. A microprobe wavelength-dispersivescan 3.97 3.96 LzI L.782 1.755 indicated the absenceof any elementswith atomic num- l0 3.81 3.79 210 3.78 zTt 1.715 ber greater than 8, except those reported herein. A 20 3.24 3.25 t02 r.665 spectrographic analysis indicated the absence of light 20 3.06 3.07 300 1.607 3.07 Lzz 1.566 elements.The resultantanalysis yielded: Al2O3 13.6, FeO 3.05 307 1.548 7.5, MgO 0.2, MnO 12.2,P2Os 39.5, F 2.2 percent,with 30 2.943 1.521 : 40 2.834 1.411 water 3l.3Vo by Penfield method (total weight Vo 40 2.701 1.397 2.534 106.5%).Because the water determinationsindicated that 2 2.477 10.93%of the water was very loosely bound and lost at ll0oC, we presumed that the very high sum of the rlntensities visual ly estinated. analysisgiven above was due to volatilization of H2O in the beam of the microprobe, as is common in highly hydrated minerals with loosely bound H2O. In addition, calculatedunit cell contents were approximately lOTotoo loss water in microprobe and elongateon [fi)l], tabular on {100} and composed of high, supporting such a of the determined the forms {100},{010}, and {001},listed in order of size analysis with concomitant increases in development.Indices were determinedfrom optical goni- weight percent oxides. Accordingly, we normalized the ometer measurementsmade on a crystal oriented using weight percent oxides to sum (with 313% water) to single-crystal X-ray diffraction techniques. Sinkankasite 1008%.The normalizedanalysis is: Al2O312.6,FeO 6.9, = crystals exhibit parallel growth and a representativecrys- MgO0.2, MnO 11.3,P2O5 36.5, F 2.0,H2O 31.3, Sum : = tal cluster is shown in Figure 1. 100.8%,less0.8% O F, total 100.0percent. Cal- culation of unit cell contents yields: Ha oo(MnrzsFeo.tt Physical and optical properties Mgo.o+)>zroAlr.se eO4)4.1s(OHo.e7Fo s5)>r.72 ' ll.l3HzO' or ' Sinkankasiteis colorless.The Mohs' hardnessis ap- ideally, HzMnAl(POrh(OH) 6H2O with Z: 2. Sinkan- HCl. proximately 4 or slightly less. The density, determinedon kasiteis readily solublein dilute 1:1 Paul B. Moore, we were several crystals of the holotype using heavy liquid tech- Through the courtesy of Dr. provided wet-chemical sinkan- niques, is 2.27 glcm3,compared with the calculatedvalue subsequently a analysisof of 2.25g/cm3. There is one perfectcleavage, {100}, which is developed only with difrculty. Sinkankasite crystals part easily along {100}twin boundariesand this efect can, in multiply-twinned crystals, resemblecleavage. Crushed fragments viewed at high power commonly show two or three apparent cleavages at right angles. In addition, crystalshave a marked tendency to break at approximate- ly right angles to [fi)l], but careful examination of this feature in broken crystals by scanningelectron microsco- py failed to reveal evidence of true cleavage.In addition, this apparent plane is not precisely parallel to {001}. Sinkankasite has a vitreous luster on cleavage surfaces and a vitreous to dull luster on crystal faces, many of which are encrustedwith an unidentified mineral (Fig. l). Sinkankasite is very brittle. There is no discernible re- sponseto ultraviolet radiation. Optically, sinkankasiteis biaxial negative,with indices of refractiona: l.5ll,9:1.529, and 7: 1.544(alI -10.002).It has 2V (calc.) = 84'; dispersion r < v, moderate; c A Y - 11". Optical determinations were Fig. l. SEM photomicrograph of a cluster of sinkankasite complicated by the multiple twinning which seemsto be crystals exhibiting parallel growth and typical habit. Scalebar is intrinsic to this mineral. 100g.m. Druse coating is of an unknown mineral. PEACOR ET AL.: SINKANKASITE kasite which had been carried out by the late Dr. Jun lto. pink to brown transluscent 3 mm crystals. Carbonate- This analysisgave MnO 12.5,FeO 7.4, MgO 0.25, ZnO apatite is younger than vivianite and hureaulite; in the 0.03,CaO 3.31, Na2O 0.(D, Al2O3 9.35, P2O5 35.30, H2O+ vugs it forms white crusts and delicate boxworks and is 14.6, H2O- 16.7, sum = 99.53 percent. Ito's spectro- composedof colorless,prismatic, bipyramidal crystals up graphic analysesshowed minor amounts of Si, Pb, Ti, Be to 0.5 mm in length. Spherulitic aggregatesand I mm and Li, the latter measured at 0.003 weight percent. crystals of pink strengite are scattered randomly on the Calculation of a chemical formula for this sinkankasiteon carbonate apatite followed by, if not contemporaneous the basis of P = 2, yields: H2(Mns.TlFes.lsMgo.ozCao.zlwith, barbosalite in very dark greenish-blue 0.5 mm Nao.or):r. rr (Alo.zrFd.ld> r.oo@o4)2 (oH) r.26 . 6.35H2O,or spherules.Fluellite, which is rather uncommon, appears ideally, H2MnA(PO4)z(OH).6H2O. This sampleis also to have formed with barbosalite and is found as clusters from the Barker pegmatiteand is quite similar in composi- of colorless, dipyramidal, I mm diameter crystals, which tion to our sample except that it contains some calcium. have large i0l0) faces. Sinkankasite, which is rather Sinkankasitehas also been found at the Palermo peg- common, is the last mineral in this sequenceand is found matite in North Groton, New Hampshire. The only as colorless, bladed, prismatic crystals up to 4 mm in known specimenhad been in the mineral collection of the length. It often occurs as divergent, radial clusters and as late Gunnar Bjareby and was provided to us by Dr. Paul spheroidalaggregates. Several specimens,which contain B. Moore. Analysis of this material, which has a powder only hureaulite and sinkankasite, have spherulesof sin- pattern indistinguishablefrom that of the type sinkanka- kankasitewithin hureaulite, indicating that in these speci- site, yields the chemical formula, on the basis of P : 2: mens, sinkankasiteformed just after the onset of hureau- Hz(Ml|orizFe6j+Mgo.os)>r.orAlo.%eo4)2(O H)o.ez.
Load more

Recommended publications
  • L. Jahnsite, Segelerite, and Robertsite, Three New Transition Metal Phosphate Species Ll. Redefinition of Overite, an Lsotype Of
    American Mineralogist, Volume 59, pages 48-59, 1974 l. Jahnsite,Segelerite, and Robertsite,Three New TransitionMetal PhosphateSpecies ll. Redefinitionof Overite,an lsotypeof Segelerite Pnur BnnN Moone Thc Departmcntof the GeophysicalSciences, The Uniuersityof Chicago, Chicago,Illinois 60637 ilt. lsotypyof Robertsite,Mitridatite, and Arseniosiderite Peur BmaN Moonp With Two Chemical Analvsesbv JUN Iro Deryrtrnent of GeologicalSciences, Haraard Uniuersity, Cambridge, Massrchusetts 02 I 38 Abstract Three new species,-jahnsite, segelerite, and robertsite,-occur in moderate abundance as late stage products in corroded triphylite-heterosite-ferrisicklerite-rockbridgeite masses, associated with leucophosphite,hureaulite, collinsite, laueite, etc.Type specimensare from the Tip Top pegmatite, near Custer, South Dakota. Jahnsite, caMn2+Mgr(Hro)aFe3+z(oH)rlPC)oln,a 14.94(2),b 7.14(l), c 9.93(1)A, p 110.16(8)", P2/a, Z : 2, specific gavity 2.71, biaxial (-), 2V large, e 1.640,p 1.658,t l.6lo, occurs abundantly as striated short to long prismatic crystals, nut brown, yellow, yellow-orange to greenish-yellowin color.Formsarec{001},a{100},il2oll, jl2}ll,ft[iol],/tolll,nt110],andz{itt}. Segeierite,CaMg(HrO)rFes+(OH)[POdz, a 14.826{5),b 18.751(4),c7.30(1)A, Pcca, Z : 8, specific gaavity2.67, biaxial (-), 2Ylarge,a 1.618,p 1.6t5, z 1.650,occurs sparingly as striated yellow'green prismaticcrystals, with c[00], r{010}, nlll0l and qll2l } with perfect {010} cleavage'It is the Feg+-analogueofoverite; a restudy on type overite revealsthe spacegroup Pcca and the ideal formula CaMg(HrO)dl(OH)[POr]r. Robertsite,carMna+r(oH)o(Hro){Ponlr, a 17.36,b lg.53,c 11.30A,p 96.0o,A2/a, Z: 8, specific gravity3.l,T,cleavage[l00] good,biaxial(-) a1.775,8 *t - 1.82,2V-8o,pleochroismextreme (Y, Z = deep reddish brown; 17 : pale reddish-pink), @curs as fibrous massesand small wedge- shapedcrystals showing c[001 f , a{1@}, qt031}.
    [Show full text]
  • New Mineral Names*,†
    American Mineralogist, Volume 106, pages 1360–1364, 2021 New Mineral Names*,† Dmitriy I. Belakovskiy1, and Yulia Uvarova2 1Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18 korp. 2, Moscow 119071, Russia 2CSIRO Mineral Resources, ARRC, 26 Dick Perry Avenue, Kensington, Western Australia 6151, Australia In this issue This New Mineral Names has entries for 11 new species, including 7 minerals of jahnsite group: jahnsite- (NaMnMg), jahnsite-(NaMnMn), jahnsite-(CaMnZn), jahnsite-(MnMnFe), jahnsite-(MnMnMg), jahnsite- (MnMnZn), and whiteite-(MnMnMg); lasnierite, manganflurlite (with a new data for flurlite), tewite, and wumuite. Lasnierite* the LA-ICP-MS analysis, but their concentrations were below detec- B. Rondeau, B. Devouard, D. Jacob, P. Roussel, N. Stephant, C. Boulet, tion limits. The empirical formula is (Ca0.59Sr0.37)Ʃ0.96(Mg1.42Fe0.54)Ʃ1.96 V. Mollé, M. Corre, E. Fritsch, C. Ferraris, and G.C. Parodi (2019) Al0.87(P2.99Si0.01)Ʃ3.00(O11.41F0.59)Ʃ12 based on 12 (O+F) pfu. The strongest lines of the calculated powder X-ray diffraction pattern are [dcalc Å (I%calc; Lasnierite, (Ca,Sr)(Mg,Fe)2Al(PO4)3, a new phosphate accompany- ing lazulite from Mt. Ibity, Madagascar: an example of structural hkl)]: 4.421 (83; 040), 3.802 (63, 131), 3.706 (100; 022), 3.305 (99; 141), characterization from dynamic refinement of precession electron 2.890 (90; 211), 2.781 (69; 221), 2.772 (67; 061), 2.601 (97; 023). It diffraction data on submicrometer sample. European Journal of was not possible to perform powder nor single-crystal X-ray diffraction Mineralogy, 31(2), 379–388.
    [Show full text]
  • 259 XLL-Chemical Researches on Some New and Rare Corn.Ish
    259 XLL-Chemical Researches on some new and rare Corn.ish Miwrals. By A. H. CHURCH,M.A., Professor of Chemistry, Royal Agricultural College, Cirencester. I. Hydrated Cerous Phosphate. THEhydrous phosphate which forms the subject of the present commnnication, occurs as a thin crust closely investing a quartzose matrix. This crust is made up of very minute crystals, generally occurring in fan-like aggregations of single rows of prisms. The faces of union of these groups are parallel to the larger lateral prismatic planes. Occasionally the structure is almost columnar, or in radiating groups, presenting a drusy surface and a general appearance somewhat resemlding that of mavellite. The mode of attachment of the crystals is such that only one of the end-faces of the prisms can be studied fully. It would appear that the crystals belong to the oblique system, and are prismatically deve- loped forms. The end-face, 001, presents the aspect of an unmodi- fied rhomboid ; occasionally, however, its diagonally opposite acute angles are replaced. Whether the appearances then presented by the crystal are due to a truncation of the solid acute angle, OF to a bevelling of the acute prismatic edge, it is difficult to say, owing to the microscopic siee of the crystals, and their parallel mode of aggregation. The plane of cleavage most easily obtained is parallel to the end- face 001; this cleavage is very perfect. Other cleavages are obtainable; one parallel to the plane previously referred to as replaciug the acute solid angles or acute prismatic edges of the crystal, the other parallel to the larger lateral prismatic planes.
    [Show full text]
  • Tavistockite and Bialite Discredited
    MINERALOGICAL MAGAZINE, MARCH 1969, VOL. 37, NO. 285 Tavistockite and bialite discredited P. G. EMBREY AND E. E. FEJER Department of Mineralogy, British Museum (Natural History) SUMMARY. Specimens of tavistockite fall into two groups: true tavistockite from the George and Charlotte mine, Tavistock, Devon, and wavellite from the Stenna Gwyn mine, St. Austell, Cornwall. Both were sold as tavistockite by the discoverer, Richard TaIling. Tavistockite proper is a fluorapatite, as shown by optical and X-ray examination, and the alumina and water in the original analysis are certainly derived from kaolinite with which the apatite is intimately associated. The published optical properties attributed to tavistockite were determined by E. S. Larsen on Stenna Gwyn material, and are those of wavellite. Re-examination of a portion of Buttgenbach's type bialite, which he related to tavistockite on optical grounds, shows it to be wavellite. TAVISTOCKITE has been a doubtful species from the time it was first described in 1865 by A. H. Church! as 'Hydrated Calcium-aluminic Phosphate (?)'. Its apparent validity has been established by successive appearances in all the standard works on systematic mineralogy, starting with J. D. Dana's renaming as tavistockite in 1868.2 The present study is perhaps as much historical as mineralogical, since Church's original material cannot be traced and other specimens present a confused picture both in naming and in locality. We have studied seventeen specimens (see table) that are or have at one time been labelled tavistockite, and find that they fall into two distinct groups that may readily be characterized by the mineral assemblages present.
    [Show full text]
  • The Crystal Structure of a Mineral Related to Paulkerrite
    Zeitschrift fUr Kristallographie 208, 57 -71 (1993) @ by R. Oldenbourg Verlag, Munchen 1993 ~ 0044-2968/93 $ 3.00+ 0.00 The crystal structure of a mineral related to paulkerrite F. Demartin Istituto di Chimica Strutturistica Inorganica, Universita degli Studi, via Vcnczian 21,1-20133 Milano, Italy T. Pilati CNR, Centro per 10 Studio delle Relazioni tra Struttura e Reattivita Chimica, via Goigi 19, 1-20133 Milano, Italy H. D. Gay Departamento de Geologia, Universidad Nacional de Cordoba, Cordoba, Argentina and C. M. Gramaccioli Dipartimento di Scienze della Terra, Sezione di Mineralogia, Universita degli Studi, via Botticelli 23, 1-20133 Milano, Italy Received: July 24,1992; accepted December 21,1992 Phosphates / Paulkerrite / Mantienneite / Benyacarite / Crystal structure Abstract. An apparently new phosphate mineral (named "benyacarite") showing evident relationships with paulkerrite and mantienneite, but richer in Mn + 2, was found in granitic pegmatites in Argentina (Cerro Blanco, Tanti, Cordoba) where it is associated with other phosphates such as tri- plite etc., and fluorides such as pachnolite. The unit-cell parameters are: ao = 10.561(5) A, bo = 20.585(8) A, CO= 12.516(2) A, orthorhombic, space group Pbca, Z = 4, Dx = 2.37 gcm - 3. The crystal structure has been refined to R(unweighted) = 0.034 and R(weighted) = 0.040 using 1023 independent reflections. It contains layers perpendicular to [010] of two kinds of octahedra, M(2)Os(0,F) and TiOs(O,F), the first essentially centered by Fe+3 atoms, with some Ti+4; the fluorine atom shares vertices of both octahedra. On both sides of these layers there are P04 tetrahedra, with one face approximately parallel to the layers; the three corners of this face are shared with octahedra centered on Ti and M(2), whereas the remaining one is shared with another M(1)06 octahedron centered by 58 F.
    [Show full text]
  • New Mineral Names*,†
    American Mineralogist, Volume 106, pages 1537–1543, 2021 New Mineral Names*,† Dmitriy I. Belakovskiy1 and Yulia Uvarova2 1Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18 korp. 2, Moscow 119071, Russia 2CSIRO Mineral Resources, ARRC, 26 Dick Perry Avenue, Kensington, Western Australia 6151, Australia In this issue This New Mineral Names has entries for 11 new species, including bohuslavite, fanfaniite, ferrierite-NH4, feynmanite, hjalmarite, kenngottite, potassic-richterite, rockbridgeite-group minerals (ferrirockbridgeite and ferro- rockbridgeite), rudabányaite, and strontioperloffite. Bohuslavite* show a very strong and broad absorption in the O–H stretching region –1 D. Mauro, C. Biagoni, E. Bonaccorsi, U. Hålenius, M. Pasero, H. Skogby, (3600–3000 cm ) and a prominent band at 1630 (H–O–H bending) with F. Zaccarini, J. Sejkora, J. Plášil, A.R. Kampf, J. Filip, P. Novotný, a shoulder indicating two slightly different H2O environments in the –1 3+ structure. The weaker band at ~5100 cm is assigned to H2O combination R. Škoda, and T. Witzke (2019) Bohuslavite, Fe4 (PO4)3(SO4)(OH) mode (bending + stretching). The IR spectrum of bohuslavite from HM (H2O)10·nH2O, a new hydrated iron phosphate-sulfate. European Journal of Mineralogy, 31(5-6), 1033–1046. shows bands at: 3350, 3103, 1626, 1100, 977, 828, 750, 570, and 472 cm–1. Polarized optical absorption spectra show absorption bands due to 3+ 3+ electronic transitions in octahedrally coordinated Fe at 23 475, 22 000, Bohuslavite (2018-074a), ideally Fe4 (PO4)3(SO4)(OH)(H2O)10·nH2O, –1 triclinic, was discovered in two occurrences, in the Buca della Vena baryte and 18 250 cm .
    [Show full text]
  • A Specific Gravity Index for Minerats
    A SPECIFICGRAVITY INDEX FOR MINERATS c. A. MURSKyI ern R. M. THOMPSON, Un'fuersityof Bri.ti,sh Col,umb,in,Voncouver, Canad,a This work was undertaken in order to provide a practical, and as far as possible,a complete list of specific gravities of minerals. An accurate speciflc cravity determination can usually be made quickly and this information when combined with other physical properties commonly leads to rapid mineral identification. Early complete but now outdated specific gravity lists are those of Miers given in his mineralogy textbook (1902),and Spencer(M,i,n. Mag.,2!, pp. 382-865,I}ZZ). A more recent list by Hurlbut (Dana's Manuatr of M,i,neral,ogy,LgE2) is incomplete and others are limited to rock forming minerals,Trdger (Tabel,l,enntr-optischen Best'i,mmungd,er geste,i,nsb.ildend,en M,ineral,e, 1952) and Morey (Encycto- ped,iaof Cherni,cal,Technol,ogy, Vol. 12, 19b4). In his mineral identification tables, smith (rd,entifi,cati,onand. qual,itatioe cherai,cal,anal,ys'i,s of mineral,s,second edition, New york, 19bB) groups minerals on the basis of specificgravity but in each of the twelve groups the minerals are listed in order of decreasinghardness. The present work should not be regarded as an index of all known minerals as the specificgravities of many minerals are unknown or known only approximately and are omitted from the current list. The list, in order of increasing specific gravity, includes all minerals without regard to other physical properties or to chemical composition. The designation I or II after the name indicates that the mineral falls in the classesof minerals describedin Dana Systemof M'ineralogyEdition 7, volume I (Native elements, sulphides, oxides, etc.) or II (Halides, carbonates, etc.) (L944 and 1951).
    [Show full text]
  • Mn,Fe)5(PO4)2(HPO4)2(H2O)4
    Eur. J. Mineral. 2016, 28, 93–103 Special issue dedicated to Published online 16 June 2015 Thomas Armbruster Single-crystal neutron diffraction and Mo¨ssbauer spectroscopic study of hureaulite, (Mn,Fe)5(PO4)2(HPO4)2(H2O)4 1,2, 3 1,4 5 6 G. DIEGO GATTA *,GU¨ NTHER J. REDHAMMER ,PIETRO VIGNOLA ,MARTIN MEVEN and GARRY J. MCINTYRE 1 Dipartimento di Scienze della Terra, Universita` degli Studi di Milano, Via Botticelli 23, 20133 Milano, Italy 2 CNR - Istituto di Cristallografia, Via G. Amendola 122/o, Bari, Italy *Corresponding author, e-mail: [email protected] 3 Abteilung fu¨r Mineralogie, FB Materialforschung & Physik, Universita¨t Salzburg, Hellbrunnerstr. 34/III, 5020 Salzburg, Austria 4 CNR-Istituto per la Dinamica dei Processi Ambientali, Milano, Italy 5 Institut fu¨r Kristallographie, RWTH Aachen, and Ju¨lich Centre for Neutron Science (JCNS), Forschungszentrum Ju¨lich GmbH, at Heinz Maier-Leibnitz Zentrum (MLZ), Lichtenbergstasse 1, 85748 Garching, Germany 6 Australian Nuclear Science and Technology Organization, Locked Bag 2001, Kirrawee DC NSW 2232, Australia Abstract: The crystal chemistry of hureaulite from the Joca˜o (Cigana) pegmatite, Conselheiro Pena, Doce Valley, Minas Gerais (Brazil), was investigated by electron microprobe analysis in wavelength-dispersive mode, single-crystal Laue (at 293 K) and monochro- 57 M(1),M(2),M(3) 2þ 2þ P P(2) matic neutron diffraction (at 2.3 K), and Fe-Mo¨ssbauer spectroscopy [ (Mn 3.61Fe 1.21Ca0.11Mg0.03) ¼4.96( PO4)2 P(1) ˚ ˚ 3 (H1.04 PO4)2(H2O)3.92, Z ¼ 4, a ¼ 17.603(6), b ¼ 9.087(2), c ¼ 9.404(4) A, b ¼ 96.66(4) , and V ¼ 1494.1(9) A at 293 K, space group C2/c].
    [Show full text]
  • New Naturally Occurring Mineral Phases from the Krásno – Horní
    Journal of the Czech Geological Society 51/12(2006) 159 New naturally occurring mineral phases from the Krásno Horní Slavkov area, western Bohemia, Czech Republic Nové minerální fáze z oblasti Krásno Horní Slavkov, západní Èechy, Èeská republika (43 figs, 21 tabs) JIØÍ SEJKORA1 RADEK KODA2 PETR ONDRU3 1 Department of Mineralogy and Petrology, National Museum, Václavské nám. 68, CZ-115 79 Prague 1, Czech Republic 2 Institute of Earth Sciences, Faculty of Science, Masaryk University, Kotláøská 2, CZ-611 37, Brno, Czech Republic 3 Biskupský dvùr 2, CZ-110 00 Prague 1, Czech Republic This paper presents description of eleven phases probably new mineral species from Krásno Horní Slavkov, western Bohemia, Czech Republic. The phases characterized are mainly supergene phosphates. All up-to-now available physical and chemical data for individual phases and references to appropriate literature are given. Key words: new natural phases; supergene minerals; phosphates; Krásno; Horní Slavkov; Czech Republic Introduction University, Prague) with XCelerator detector, with sec- ondary monochromator, using CuKá radiation at 40 kV In the course of the prolonged study of mineralization in and 30 mA. the Horní Slavkov Krásno ore district, presented in this The results were processed using X-ray analysis soft- issue of the Journal (Beran Sejkora, 2006; Pláil et al. ware ZDS for DOS (Ondru 1993), Bede ZDS Search/ 2006; Sejkora et al. 2006a, b, c), eleven new mineral Match ver. 4.5 (Ondru Skála 1997); unit-cell parame- phases have been encountered. This contribution presents ters were refined by program of Burnham (1962) and by the results of study of these phases.
    [Show full text]
  • The American Journal of Science
    THE AMERIOAN JOURNAL OF SOIENCE. EDITORS JAMES D. AND EDWARD S. DANA. J I ASSOCIATE EDITORS Pa0FE880BS JOSIAH P. COOKE, GEORGE L. GOODALE AND JOHN TROWBRIDGE, OF CAllBaIDGB. PKOFE880B8 H. A. NEWTON AND A. E. VERRILL, OF NEW HAVEN, PBOFE880B GEORGE F. BARKER, OF' PHILADBLPWA. 1 THIRD SBRIBS. VOL. XXXIX.--,-[WHOLE NUMBER, CXXXIX.] Nos. 229-234. JANUARY TO JUNE, 1890. WITH YUI PLATES. NEW HAVEN, CONN.: J. D. & E. S. DANA. 1890. Brush and J}ana-Kine1'al Locality at Branchville. 201 urnes, and enough water to increase the total volume to 100 cm', or a little more. A platinum spiral is introduced, a trap made of a straight two-bulb drying-tube cut off short is hun~ with the larger end downward in the neck of the flask, and the liquid is boiled until the level reaches the mark put upon the flask to indicate a volume of 35 cm'. Great care should be taken not to press the concentration beyond this point on ac- o count of the double danger of losing arsenious chloride and setting up reduction of the arseniate by the bromide. On the other hand, though 35 cm' is the ideal volume to be attained, failure to concentrate below 40 cm' introduces no appreciable error. The liquid remaining is cooled and nearly neutralized by sodium hydrate (ammonia is not equally good), neutraliza­ tion is completed by hydrogen potassium carbonate, an excess of 20 cm' of the saturated AolutlOn of the latter is added, and the arsenious oxide in solution is titrated by standard iodine in the presence of starch.
    [Show full text]
  • Minerals of Arizona Report
    MINERALS OF ARIZONA by Frederic W. Galbraith and Daniel J. Brennan THE ARIZONA BUREAU OF MINES Price One Dollar Free to Residents of Arizona Bulletin 181 1970 THE UNIVERSITY OF ARIZONA TUCSON TABLE OF CONT'ENTS EIements .___ 1 FOREWORD Sulfides ._______________________ 9 As a service about mineral matters in Arizona, the Arizona Bureau Sulfosalts ._. .___ __ 22 of Mines, University of Arizona, is pleased to reprint the long-standing booklet on MINERALS OF ARIZONA. This basic journal was issued originally in 1941, under the authorship of Dr. Frederic W. Galbraith, as Simple Oxides .. 26 a bulletin of the Arizona Bureau of Mines. It has moved through several editions and, in some later printings, it was authored jointly by Dr. Gal­ Oxides Containing Uranium, Thorium, Zirconium .. .... 34 braith and Dr. Daniel J. Brennan. It now is being released in its Fourth Edition as Bulletin 181, Arizona Bureau of Mines. Hydroxides .. .. 35 The comprehensive coverage of mineral information contained in the bulletin should serve to give notable and continuing benefits to laymen as well as to professional scientists of Arizona. Multiple Oxides 37 J. D. Forrester, Director Arizona Bureau of Mines Multiple Oxides Containing Columbium, February 2, 1970 Tantaum, Titanium .. .. .. 40 Halides .. .. __ ____ _________ __ __ 41 Carbonates, Nitrates, Borates .. .... .. 45 Sulfates, Chromates, Tellurites .. .. .. __ .._.. __ 57 Phosphates, Arsenates, Vanadates, Antimonates .._ 68 First Edition (Bulletin 149) July 1, 1941 Vanadium Oxysalts ...... .......... 76 Second Edition, Revised (Bulletin 153) April, 1947 Third Edition, Revised 1959; Second Printing 1966 Fourth Edition (Bulletin 181) February, 1970 Tungstates, Molybdates.. _. .. .. .. 79 Silicates ...
    [Show full text]
  • New Mineral Names*
    American Mineralogist, Volume 75, pages 931-937, 1990 NEW MINERAL NAMES* JOHN L. JAMBOR CANMET, 555 Booth Street, Ottawa, Ontario KIA OGI, Canada EDWARD S. GREW Department of Geological Sciences, University of Maine, Orono, Maine 04469, U.S.A. Akhtenskite* Electron-microprobe analyses (using a JXA-50A probe F.V. Chukhrov, A.I. Gorshkov, A.V. Sivtsov, V.V. Be~- for Au and Sb, and a JXA-5 probe for 0) of one aggregate ezovskaya, YU.P. Dikov, G.A. Dubinina, N.N. Van- gave Au 49.7, 50.1, 49.3, Sb 39.2, 39.1, 39.2, 0 10.7, nov (1989) Akhtenskite- The natural analog of t-Mn02. 11.2, 11.2, sum 99.6, 100.4, 99.7 wt%; a second aggregate Izvestiya Akad. Nauk SSSR, ser. geol., No.9, 75-80 gave Au 52.4, 52.6, Sb 36.7, 36.3, 0 11.6, 11.4, sum (in Russian, English translation in Internat. Geol. Rev., 100.7, 100.3 wt%; the averages correspond to Au- 31, 1068-1072, 1989). F.V. Chukhrov, A.I. Gorshkov, V.S. Drits (1987) Ad- Sb1.2602.76and AU1.02Sblls02.83, respectively, close to a vances in the crystal chemistry of manganese oxides. theoretical composition AuSb03. H = 223.8 and 186.8 Zapiski Vses. Mineralog. Obshch. 16, 210-221 (in Rus- kg/mm2. No crystallographic parameters could be de- sian, English translation in Internat. Geol. Rev., 29, duced from the X-ray powder pattern, in which the fol- 434-444, 1987). lowing lines were present: 4.18( 100), 3.92(20), 3.72(30), 3.12(10), 2.08(10), 2.03(30), 1.
    [Show full text]