09/12/2010 16:02:13 Species Oxyhalide Halide Sulphide Carbonate Sulphate Oxide Sulphide silicate 04 As/V/Mo Phosphate Other Minerals Slag alteration and ore Ore Gangue Primary Hydrothermal products Silicification volcanics Silurian suite Mn-oxide pod contents Mn Minerals Slag Quarry Coombe Batts Blagdon Mendip) (Chewton Wood Buddles Callow Rock Quarry Comfort of Castle Charterhouse Mendip Chewton Warren Chewton “Churchill” Quarry Colemans Coley Mill, Hinton Blewitt Bishop Compton Farm Coombe Didsbury Dolebury Hill Quarry Stone Doulting Quarry Dulcote Quarry Durnford Harptree East Quarry Cave Fairy Ore Green Slade Gurney Quarry Halecombe Woods Ham Harptree Higher Pitts Farm + Mine Quarry Holcombe Quarry + Caverns Leer Lambs Quarry Merehead Moons Hill “Priddy” Priddy Hill Farm (Chewton) Pitts Rodney Rowberrow Quarry + Hill Sandford Shipham Shelf Shute Smelter Cuthberts St Lane Stancombe Mine Wesley Westbury-sub-Mendip Quarry Whatley Wick Quarry Ankerite x x X Allophane x x X X Alumohydrocalcite x x X Anglesite x x x * X Apophyllite x x X Aragonite x x X X X X Ardennite x x x X Azurite x x * X * * X Baryte x x x X X X X X X X X X X X X X Barytocalcite x x X Bindheimite x x X Blixite x x X X X X Braunite x x X Brucite x x X Calcite x x x X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Calcite var. Mg-calcite x X Calcite var. manganocalcite x X Celestine x x x X X X * x X Cerussite x x x x X X X X X X X X X X X X X X X X X X X X Cesarolite x X X X Chalcocite x x * * X X Chalcopyrite x x x X X X X X X Chlorite x X Chloroxiphite x x X T X X Chrysocolla x x X X Chrysotile x x X X X Cinnabar x x X Copper x x x X X Coronadite x x X X Cotunnite x x X Covelline x x X X "Crednerite" phase A (Cu:Mn 1:1) x x X * X "Crednerite" phase B (Cu:Mn 1:1.33) * "Crednerite" phase C (Cu:Mn 1:3) X X X X X X X "Crednerite" phase D (Cu:Mn 1:8 + Pb) X X Crednerite alteration phase AY x x F Cryptomelane x x X Cuprite x x X * X X X X Cu-Cl phase x X Damaraite x x ? Datolite x x X Descloizite x x X Diaboleite x x X X X T X Djurleite x x X X Dolomite x x * X X X X X X Duftite x x X X Dundasite x x X X Ecdemite x x x * Epidote x x X Ferroceladonite x x X Fluorite x x x X X Fornacite x x X Galena x x X * X * X X * * X X * X * X * X X * X * * X * * X X X Ganomalite x x X Gibbsite x x X Goethite x x X X X X X X X X X X X X X X X X X X Greenockite x X X X X Halloysite x x X Hausmannite x x X X X X X X X X X X X X X X Hedyphane x x X Hemimorphite x x Hematite x x x X X X X X X X X X X X X X Hisingerite x “Hydrocerussite” x x x X * X X X X X X X X Hydromagnesite x x X Hydrotalcite x x X Kaolinite x x X Kentrolite x x x X X X * X X X Kombatite x x X Kombatite-like phase x x X X F Laumontite x x X Laurionite x x x X X Leadhillite x x * X Lepidocrocite x x X "Limonite" x x X X X X X X X X X X X X Lizardite x x X * Lorettoite x x * Matttheddleite x x Macedonite x x x Malachite x x x X X X X X * X X X * X X X Manganite x x X X X X X Marcasite x x X Melaconite x X Melanotekite x x X X * * X X Melanterite x x X Mendipite x x T X X X X X X Mereheadite x x T X Mimetite x x X X X X X Minium x X X Molybdophyllite x x Mottramite x x X Nasonite x x X "Ochre" X X X X X X X X X Otavite x X Paralaurionite x x x X * X X Parkinsonite x x T X T Ps-As-O-Cl 15:1:1 phase x x F Pb fluoroxy-chloride (Pb2OF)Cl x x F Pb-Mn-Co-Cu-Na-Mg-Si-O phase x F Pb-Oxychloride (layered) x x F Pb-Oxychloride (orange) in mereheadite x F Pb-Oxychloride (wispy) x x F Pb-Si-S phase x x X Phosgenite x x X Plattnerite x x X X X X Plumbogummite x x Plumbonacrite x X Polianite x x * "Psilomelane" X Pyrite x x X X X X X X X X Pyrolusite x x X X X X X X X X Pyromorpite x x X X X * X X * X Quartz x x X X X X X X X X Quartz var. Chalcedony X Rhodochrosite x x x X * X X X X X Rickturnerite x x T X Romanechite x x * Sahlinite x x X Sahlinite-like phase x x X X F Saponite x x X Scarbroite x x X Sepiolite x x X X Smithsonite x x X * X X X * X Sphalerite x x X X X X X * X X Strontianite x X "Sulphate-free symesite" x X Sulphur x X X Symesite x x T Tetrahedrite x x X Vanadinite x x X X X Vesigneite x x X X "wad" x X X X X X X X X * Wulfenite x x X * X X X X X X X Hydrocarbons x X Key T Type locality F First locality where a new phase has been found; will become type locality if the phase is found to be a new mineral && accepted by the IMA X Minerals first reported during the time that this study has been running, by multiple authors Needs checking or reconfirmation Redefined or refined during this study X Confirmed by authors during our study X Reported – not seen by the authors, but reliably confirmed * Reported but not confirmed - we could not locate a valid specimen X Does not occur list of the minerals that occur in the Mendip manganese deposits, showing the suite to which they belong, and the localities where they have been found. A IMA 2010-034 New mineral / phase Macedonite minerals that we are convinced occur, but where there is insufficient material for definitive proof to be obtained Vesigneite discredited occurrences Callow Rock Quarry includes the now defunct Bryant's and Axbridge RDC Quarries Table 1. Table Journal of the Russell Society (2010) JRS13 Mendips A3 foldout.indd 1 Figure 2. The ‘relationship map’ describing the minerals of the Mendip manganese deposits. Journal of the Russell Society (2010) JRS13 Mendips A3 foldout.indd 2 09/12/2010 16:02:14.