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Pokrovskite Mineral Data + |
General Pokrovskite Information |
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| Mg2(CO3)(OH)2·0.5(H2O) | |||
| Molecular Weight = 151.64 gm | |||
| Magnesium 32.06 % Mg 53.16 % MgO | |||
| Hydrogen 1.99 % H 17.82 % H2O | |||
| Carbon 7.92 % C 29.02 % CO2 | |||
| Oxygen 58.03 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Mg2(CO3)(OH)2·0.5(H2O) | |||
| Approved IMA 1984 | |||
| Link to MinDat.org Location Data. | |||
Pokrovskite Image | |||
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Pokrovskite Crystallography |
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| a:b:c =0.7685:1:0.2766 | |||
| a = 9.43, b = 12.27, c = 3.395, Z = 4; beta = 96.6° V = 390.22 Den(Calc)= 2.58 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a | |||
| By Intensity(I/Io): 2.6(1), 2.17(0.9), 6.1(0.7), | |||
Physical Properties of Pokrovskite |
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| [???] Perfect | |||
| Beige yellow, White, Pink. | |||
| 2.51 - 2.52, Average = 2.51 | |||
| Transparent to Translucent | |||
| 3 - Calcite | |||
| Earthy (Dull) | |||
| white | |||
Optical Properties of Pokrovskite |
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| CI meas= -0.027 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.001 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2283,KPDmeas= 0.2342,KC= 0.2281 |
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| Biaxial (-), a=1.537, b=1.611, g=1.619, bire=0.0820, 2V(Calc)=34, 2V(Meas)=18. | |||
Calculated Properties of Pokrovskite |
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relectron=2.62 gm/cc |
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| Fermion Index = 0.0332 Boson Index = 0.9668 |
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PEPokrovskite = 0.87 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Pokrovskite is Not Radioactive |
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Pokrovskite Classification |
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| 16a.3.2.3 (16a)Carbonates - Hydroxyl or Halogen | |||
| (16a.3)where (A B)2 (XO3) Zq | |||
| (16a.3.2)Malachite Group | |||
| V/C.01-30 V - Nitrates, Carbonates and Borates | |||
| V/C - Waterfree carbonates with unfamiliar anions | |||
| V/C.01 - Azurite - Rosasite group and related compounds | |||
Other Pokrovskite Information |
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| PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Pokrovskite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Pokrovskite using: Visit our Advertisers for Pokrovskite : Translate Pokrovskite Mineral Data : Ask about Pokrovskite here : Print or Cut-and-Paste your Pokrovskite Specimen Label here :
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