Roshchinite Mineral Data + 
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- 3.4.15.1 Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m
- 3.4.15.2 Bursaite Pb5Bi4S11 Bbmm 2/m 2/m 2/m
- 3.4.15.3 Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m
- 3.4.15.4 Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m
- 3.4.15.5 Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m
- 3.4.15.6 Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m
- 3.4.15.7 Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m
- 3.4.15.8 Fizelyite Pb14Ag5Sb21S48(?) P 21/n 2/m
- II/E.23-10 Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m
- II/E.23-20 Fizelyite Pb14Ag5Sb21S48(?) P 21/n 2/m
- II/E.23-30 Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m
- II/E.23-40 Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m
- II/E.23-50 Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m
General Roshchinite Information |
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 Chemical Formula: |
Ag19Pb10Sb51S96 or Pb(Ag,Cu)2(Sb,As)5S10 | ||
| Composition: |
Molecular Weight = 12887.63 gm | ||
| Copper 0.99 % Cu | |||
| Silver 15.90 % Ag | |||
| Antimony 43.46 % Sb | |||
| Arsenic 2.91 % As | |||
| Lead 12.86 % Pb | |||
| Sulfur 23.89 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Ag19Pb8Cu2Sb46As5S96 | ||
| IMA Status: |
Approved IMA 1990 | ||
| Locality: |
Kvartsitovyye Gorki deposit, Kasakhstan. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Yuri V. Roshchin (1934-1979), Russian Geologist. | ||
| Synonym: |
IMA1989-006 | ||
Search for Roshchinite Images | |||
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Images:
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Roshchinite Crystallography |
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| Axial Ratios: |
a:b:c =0.6796:1:0.8889 | ||
| Cell Dimensions: |
a = 12.946, b = 19.048, c = 16.932, Z = 1; V = 4,175.35 Den(Calc)= 5.13 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmna | ||
| X Ray Diffraction: |
By Intensity(I/Io): 1.765(1), 2.85(0.8), 3.24(0.6), | ||
Physical Properties of Roshchinite |
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| Cleavage: |
None | ||
| Color: |
Lead gray, Silver gray. | ||
| Density: |
5.27 | ||
| Diaphaniety: |
Opaque | ||
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. | ||
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | ||
| Hardness: |
2.5-3.5 - Finger Nail-Copper Penny | ||
| Luster: |
Metallic | ||
| Streak: |
pale steel gray | ||
Optical Properties of Roshchinite |
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| RL Anisotrophism: |
Distinct. | ||
Calculated Properties of Roshchinite |
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| Electron Density: |
relectron=4.50 gm/cc |
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| Fermion Index |
Fermion Index = 0.03021 Boson Index = 0.96979 |
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| Photoelectric: |
PERoshchinite = 416.00 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Roshchinite is Not Radioactive |
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Roshchinite Classification |
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| Dana Class: |
3.4.15.7 (3)Sulfides - Sulfosalts | ||
| (3.4)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals | |||
| (3.4.15)Lillianite Group (Orthorhombic, AmBnS6 where A=Pb, Ag, Mn and B=Sb, Bi) | |||
| Strunz Class: |
II/E.23-50 II - Sulfides and sulphosalts | ||
| II/E - Sulfosalts (S : As,Sb,Bi = x) Complex Lead-Sulfosalts (Pb-Fe/Mn, Pb-Ag), with predominant Antimon x = 2.3 - 2.0 | |||
| II/E.23 - Uchucchacuaite - Roshchinite series | |||
Other Roshchinite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.77,p450,1992) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Roshchinite : 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 Roshchinite using: Visit our Advertisers for Roshchinite : Translate Roshchinite Mineral Data : Ask about Roshchinite here : Print or Cut-and-Paste your Roshchinite Specimen Label here :
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