Petrovskaite Mineral Data + Say PETROVSKAITE


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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.
 

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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: MonoclinicSpace 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 Diaphaniety: Diaphaniety: 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:

relectron=8.01 gm/cc
note: rPetrovskaite =9.51 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00155
Boson Index = 0.99845
Help on Photoelectric: Photoelectric:

PEPetrovskaite =1,025.10 barns/electron
U=PEPetrovskaite x relectron=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: 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
 
2.4.17.1 Petrovskaite AuAg(S,Se) P 2/m,P 2,Pm Mono
Help on  Strunz Class: 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
 
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
 

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 -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

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Print or Cut-and-Paste your Petrovskaite Specimen Label here :

Petrovskaite

AuAg(S,Se)
Dana No: 2.4.17.1 Strunz No: II/B.07-10
Locality:

 

Notes:

 

 
   
 
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