Petrovskaite Mineral Data + 
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- 2.4.17.1 Petrovskaite AuAg(S,Se) P 2/m,P 2,Pm Mono
- II/B.07-10 Petrovskaite AuAg(S,Se) P 2/m,P 2,Pm Mono
- II/B.07-20 Uytenbogaardtite Ag3AuS2 P 4122 4 2 2
- II/B.07-30 Criddleite TlAg2Au3Sb10S10 A2/m ? 2/m
- II/B.07-40 Penzhinite (Ag,Cu)4Au(S,Se)4 P 6322 6 2 2
- II/B.07-50 Fischesserite Ag3AuSe2 I 4132 4 3 2
- II/B.07-60 Petzite Ag3AuTe2 I 4132 4 3 2
- II/B.07-70 Muthmannite AgAuTe2 P 2/m Ortho
General Petrovskaite Information |
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 Chemical Formula: |
AuAg(S,Se) | ||
| Composition: |
Molecular Weight = 339.25 gm | ||
| Silver 31.80 % Ag | |||
| Gold 58.06 % Au | |||
| Selenium 1.16 % Se | |||
| Sulfur 8.98 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
AuAgSe0.05S0.95 | ||
| Environment: |
Microscopic rims on gold particles. | ||
| IMA Status: |
Approved IMA 1984 | ||
| Locality: |
Maikain gold deposit, Kazakhstan. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Nina Petrovskaya (1910-), Russian mineralogist. | ||
Search for Petrovskaite Images | |||
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Images:
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Petrovskaite Crystallography |
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| Axial Ratios: |
a:b:c =0.741:1:1.0826 | ||
| Cell Dimensions: |
a = 4.943, b = 6.67, c = 7.221, Z = 4; beta = 95.68° V = 236.91 Den(Calc)= 9.51 | ||
| Crystal System: |
MonoclinicSpace Group: P 2/m,P 2,Pm | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.77(1), 2.63(0.5), 2.39(0.4), | ||
Physical Properties of Petrovskaite |
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| Color: |
Lead gray, Dark grayish black, Black. | ||
| Density: |
9.5 | ||
| Diaphaniety: |
Opaque | ||
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. | ||
| Hardness: |
2-2.5 - Gypsum-Finger Nail | ||
| Luster: |
Metallic - Dull | ||
| Streak: |
dark gray | ||
Optical Properties of Petrovskaite |
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| Optical Data: |
NCalc= 2.42 - from Gladstone-Dale relationship (KC = 0.1492) where Ncalc=Dcalc*KC+1 NCalc= 2.42 - from Gladstone-Dale relationship (KC = 0.1492) where Ncalc=Dmeas*KC+1 |
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Calculated Properties of Petrovskaite |
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| Electron Density: |
relectron=8.01 gm/cc |
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| Fermion Index |
Fermion Index = 0.00155 Boson Index = 0.99845 |
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| Photoelectric: |
PEPetrovskaite =1,025.10 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Petrovskaite is Not Radioactive |
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Petrovskaite Classification |
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| Dana Class: |
2.4.17.1 (2)Sulfides - Including Selenides and Tellurides | ||
| (2.4)where Am Bn Xp, with (m+n):p=2:1 | |||
| (2.4.17)Dana Group | |||
| Strunz Class: |
II/B.07-10 II - Sulfides and sulphosalts | ||
| II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Sulfides, Selenides and Tellurides with predominant Copper and Silver/Gold | |||
| II/B.07 - Petrovskaite - Muthmannite series | |||
Other Petrovskaite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) | ||
| See Also: |
Links to other databases for Petrovskaite : 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 Petrovskaite using: Visit our Advertisers for Petrovskaite : Translate Petrovskaite Mineral Data : Ask about Petrovskaite here : Print or Cut-and-Paste your Petrovskaite Specimen Label here :
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