General Embreyite Information![]() Pb5(CrO4)2(PO4)2•(H2O) |
![]() Molecular Weight = 1,475.95 gm |
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Chromium 7.05 % Cr 13.55 % CrO3 |
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Phosphorus 4.20 % P 9.62 % P2O5 |
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Hydrogen 0.14 % H 1.22 % H2O |
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Lead 70.19 % Pb 75.61 % PbO |
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Oxygen 18.43 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() Pb5(CrO4)2(PO4)2•(H2O) |
![]() Approved IMA 1972 |
![]() Berezov, Ekaterinburg (Sverdlovsk), Ural Mts, Russia Link to MinDat.org Location Data. |
![]() Named for P. G. Embry |
![]() Embreyite + Pronunciation |
![]() | | Embreyite Image
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Embreyite Crystallography![]() a:b:c =1.7308:1:1.2659 |
![]() a = 9.755, b = 5.636, c = 7.135, Z = 1; beta = 103.08° V = 382.10 Den(Calc)= 6.41 |
![]() Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m |
![]() By Intensity(I/Io): 3.167(1), 2.818(0.6), 4.751(0.6), |
| Physical Properties of Embreyite![]() None |
![]() Orange. |
![]() 6.45 |
![]() Transparent to Translucent |
![]() Brittle - Uneven - Very brittle fracture producing uneven fragments. |
![]() 3.5 - Copper Penny |
![]() Earthy (Dull) |
![]() yellow |
| Optical Properties of Embreyite![]() CI meas= -0.208 (Poor) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.216 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2038,KPDmeas= 0.2026,KC= 0.1677 Ncalc = 2.07 - 2.08 ![]() Biaxial (-), a=2.2, b=2.36, g=2.36, bire=0.1600, 2V(Calc)=0, 2V(Meas)=0-10. |
| Calculated Properties of Embreyite![]() Bulk Density (Electron Density)=5.47 gm/cc |
note: Specific Gravity of Embreyite =6.45 gm/cc. ![]() Fermion Index = 0.16 |
Boson Index = 0.84 ![]() PEEmbreyite =1,272.31 barns/electron |
U=PEEmbreyite x rElectron Density=6,961.23 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Embreyite is Not Radioactive | Embreyite Classification![]() 43.03.02.01 (43)Compound Phosphates, etc. |
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(43.03)(Hydrated Normal Compound Anions) |
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(43.03.02)Dana Group |
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![]() 07.FC.20 07 - SULFATES (SELENATES, TELLURATES) |
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07.F - Chromates |
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07.FC -With PO4, AsO4, SiO4 |
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| Other Embreyite Information![]() PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
![]() Links to other databases for Embreyite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Embreyite using: Visit our Advertisers for Embreyite : A Bijoux Google Search for EmbreyiteAdam's Minerals Google Search for Embreyite Cape Minerals Google Search for Embreyite Dakota Matrix Minerals Google Search for Embreyite Excalibur Mineral Corp. Google Search for Embreyite Exceptional Minerals Google Search for Embreyite John Betts Fine Minerals Search for Embreyite McDougall Minerals Google Search for Embreyite Mineral News Website Link Rock and Mineral Shows Google Search for Embreyite Weinrich Minerals, Inc. Google Search for Embreyite Ask about Embreyite here : Print or Cut-and-Paste your Embreyite Specimen Label here :
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