Mineralogy Database

Petrovskaite Mineral Data

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General Petrovskaite Information

Help on Chemical  Formula: Chemical Formula: AuAg(S,Se)
Help on Composition: Composition: Molecular Weight = 339.25 gm
   Silver    31.80 %  Ag
   Gold      58.06 %  Au
   Selenium   1.16 %  Se
   Sulfur     8.98 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: AuAgSe0.05S0.95
Help on Environment: Environment: Microscopic rims on gold particles.
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Maikain gold deposit, Kazakhstan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Nina Petrovskaya (1910-), Russian mineralogist.
Help on Name Pronunciation: Name Pronunciation: Petrovskaite + Pronunciation Say PETROVSKAITE

Petrovskaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.741:1:1.0826
Help on Cell Dimensions: Cell Dimensions: a = 4.943, b = 6.67, c = 7.221, Z = 4; beta = 95.68° V = 236.91 Den(Calc)= 9.51
Help on Crystal System: Crystal System: Monoclinic Space Group: P 2/m,P 2,Pm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.77(1), 2.63(0.5), 2.39(0.4),

Physical Properties of Petrovskaite

Help on Color: Color: Lead gray, Dark grayish black, Black.
Help on Density: Density: 9.5
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luster: Luster: Metallic - Dull
Help on Streak: Streak: dark gray

Optical Properties of Petrovskaite

Help on Optical Data: 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

Calculated Properties of Petrovskaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=8.01 gm/cc
note: Specific Gravity of Petrovskaite =9.51 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0015579229
Boson Index = 0.9984420771
Help on Photoelectric: Photoelectric: PEPetrovskaite =1,025.10 barns/electron
U=PEPetrovskaite x rElectron Density=8,212.89 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Petrovskaite is Not Radioactive

Petrovskaite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.04)where Am Bn Xp, with (m+n):p=2:1
  (02.04.17)Dana Group Petrovskaite AuAg(S,Se) P 2/m,P 2,Pm Mono
Help on  Strunz Class: Strunz Class: 02.BA.40c 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)
  02.BA -With Cu, Ag, Au
02.BA.40c Petrovskaite AuAg(S,Se) P 2/m,P 2,Pm Mono

Other Petrovskaite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Petrovskaite :
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

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Dana No: Strunz No: 02.BA.40c





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