[Mineral Galleries] [About Me] [e-Bay Items] [Latest News] [How to Order] A Diverse Selection of Beautifully Unique Gem & Mineral Specimens Desert Winds Gems & Minerals • For All Levels of Collectors Worldwide Aesthetic & Rare Mineral Specimens • Regular Updates General Empressite InformationAgTe |
Molecular Weight = 235.27 gm |
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Silver 46.31 % Ag |
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Tellurium 53.69 % Te |
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______ |
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100.00 % |
Ag1.01Te0.99 |
Low temperature gold-poor hydrothermal vein deposits. |
Valid Species (Pre-IMA) 1914 |
Empress Josephine mine, Saguache County and Red Cloud mine, Bolder County, Colorado, USA. Link to MinDat.org Location Data. |
Named for the locality. |
Empressite + Pronunciation |
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Empressite Crystallographya:b:c =0.4418:1:0.2295 |
a = 8.882, b = 20.1, c = 4.614, Z = 16; V = 823.73 Den(Calc)= 7.59 |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmnb |
By Intensity(I/Io): 2.699(1)(241), 2.2205(0.34)(400), 3.3277(0.3)(240),3.1742(0.26)(141), 2.3138(0.23)(261), 3.8(0.21)(031), 2.1371(0.2)(271), 2.8873(0.15)(231), 4.012(0.15)(111), |
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Mouse
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| Physical Properties of EmpressiteNone |
Bronze, Light bronze. |
7.5 - 7.6, Average = 7.55 |
Opaque |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
Compact - Occurs as a compact mass. |
3.5 - Copper Penny |
Metallic |
grayish black |
| Optical Properties of EmpressiteStrong, gray to yellowish white to grayish blue. |
Moderate to strong. |
Grayish white with no internal reflections. |
Very strong, in gray to creamy white. |
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| Calculated Properties of EmpressiteBulk Density (Electron Density)=6.38 gm/cc |
note: Specific Gravity of Empressite =7.59 gm/cc. Fermion Index = 0.04 |
Boson Index = 0.96 PEEmpressite = 321.24 barns/electron |
U=PEEmpressite x rElectron Density=2,050.92 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Empressite is Not Radioactive | Empressite Classification02.08.24.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.08)where Am Bn Xp, with (m+n):p=1:1 |
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(02.08.24)Dana Group |
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02.CB.80 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CB -With Zn, Fe, Cu, Ag, Au, etc |
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| Other Empressite InformationNAME( Dana8) PHYS. PROP.(Dana8, AmMin, v 89, p 1043) OPTIC PROP.(AmMin, v 89, p 1044) |
Links to other databases for Empressite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Empressite using: Visit our Advertisers for Empressite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Empressite Mineral Data : Ask about Empressite here : Print or Cut-and-Paste your Empressite Specimen Label here :
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