General Cobalttsumcorite Information![]() Pb(Co,Fe)2(AsO4)2(OH,H2O)2 |
![]() Molecular Weight = 607.66 gm |
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Iron 6.43 % Fe 8.28 % FeO |
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Cobalt 7.76 % Co 10.92 % Co2O3 |
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Nickel 3.86 % Ni 4.92 % NiO |
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Arsenic 24.66 % As 37.82 % As2O5 |
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Hydrogen 0.53 % H 4.74 % H2O |
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Lead 30.69 % Pb 33.06 % PbO |
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Oxygen 26.07 % O |
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100.00 % 99.74 % = TOTAL OXIDE |
![]() Pb0.9Co0.8Fe2+0.7Ni0.4(AsO4)2(OH)0.6(H2O)1.3 |
![]() Secondary mineral found in dump material from an oxidation zone. |
![]() Approved IMA 1999 (Dana # Added) |
![]() "Am Roten Berg" mining area, 4.8 km SW of Schneeberg, Germany. Link to MinDat.org Location Data. |
![]() Named for the chemical and structural relationship to tsumcorite |
![]() IMA1999-029 |
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Cobalttsumcorite Crystallography![]() a:b:c =1.4409:1:1.1967 |
![]() a = 9.097, b = 6.313, c = 7.555, Z = 2; beta = 115.08° V = 392.97 Den(Calc)= 5.14 |
![]() Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
![]() By Intensity(I/Io): 3.243(1)(112), 4.462(0.96)(201), 4.656(0.87)(111),3.01(0.58)(201), 2.868(0.5)(021), 2.733(0.47)(311), 2.55(0.4), |
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| Physical Properties of Cobalttsumcorite![]() {001} Good |
![]() Brown, Reddish brown. |
![]() Transparent |
![]() Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
![]() Aggregates - Made of numerous individual crystals or clusters. |
![]() Rosette - Bundled tabular aggregates resembling rose flower petals. |
![]() Tabular - Form dimensions are thin in one direction. |
![]() 4.5 - Between Fluorite and Apatite |
![]() Subadamantine |
![]() light brown |
| Optical Properties of Cobalttsumcorite![]() CI calc= -0.015 (Superior) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.1842,KC= 0.1815 Ncalc = 1.93 ![]() Biaxial (+), a=1.92, b=1.94, g=1.98, bire=0.0600 |
| Calculated Properties of Cobalttsumcorite![]() Bulk Density (Electron Density)=4.62 gm/cc |
note: Specific Gravity of Cobalttsumcorite =5.14 gm/cc. ![]() Fermion Index = 0.06 |
Boson Index = 0.94 ![]() PECobalttsumcorite = 548.25 barns/electron |
U=PECobalttsumcorite x rElectron Density=2,533.93 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Cobalttsumcorite is Not Radioactive | Cobalttsumcorite Classification![]() 40.02.09.08 (40)Hydrated Phosphates, etc |
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(40.02)where A++ (B++)2 (XO4) · x(H2O) |
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(40.02.09)Helmutwinklerite Subgroup |
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![]() 08.CG.15 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.C - Phosphates without Additional Anions, with H2O |
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08.CG -With large and medium-sized cations, RO4:H2O = 1:1 |
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| Other Cobalttsumcorite Information![]() NAME( AmMin, vol 87, p 996) PHYS. PROP.(AmMin, vol 87, p 996) OPTIC PROP.(AmMin, vol 87, p 996) |
![]() Links to other databases for Cobalttsumcorite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Cobalttsumcorite using: Visit our Advertisers for Cobalttsumcorite : A Bijoux Google Search for CobalttsumcoriteAdam's Minerals Google Search for Cobalttsumcorite Cape Minerals Google Search for Cobalttsumcorite Dakota Matrix Minerals Google Search for Cobalttsumcorite Excalibur Mineral Corp. Google Search for Cobalttsumcorite Exceptional Minerals Google Search for Cobalttsumcorite John Betts Fine Minerals Search for Cobalttsumcorite McDougall Minerals Google Search for Cobalttsumcorite Mineral News Website Link Rock and Mineral Shows Google Search for Cobalttsumcorite Weinrich Minerals, Inc. Google Search for Cobalttsumcorite Ask about Cobalttsumcorite here : Print or Cut-and-Paste your Cobalttsumcorite Specimen Label here :
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