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Roshchinite Mineral Data
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General Roshchinite Information
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 Chemical Formula: |
Ag19Pb10Sb51S96 or Pb(Ag,Cu)2(Sb,As)5S10 |
| Composition: |
Molecular Weight = 12887.63 gm |
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Copper 0.99 % Cu |
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Silver 15.90 % Ag |
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Antimony 43.46 % Sb |
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Arsenic 2.91 % As |
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Lead 12.86 % Pb |
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Sulfur 23.89 % S |
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______ |
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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. |
| Name Pronunciation: |
Roshchinite + Pronunciation  |
| Synonym: |
IMA1989-006 |
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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 - Dipyramidal H-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), |
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Physical Properties of Roshchinite
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| Cleavage: |
None |
| Color: |
Lead gray, Silver gray. |
| Density: |
5.27 |
| Diaphaneity: |
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 |
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Optical Properties of Roshchinite
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| RL Anisotrophism: |
Distinct. |
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Calculated Properties of Roshchinite
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| Electron Density: |
Bulk Density (Electron Density)=4.50 gm/cc
note: Specific Gravity of Roshchinite =5.13 gm/cc.
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| Fermion Index: |
Fermion Index = 0.03
Boson Index = 0.97 |
| Photoelectric: |
PERoshchinite = 416.00 barns/electron
U=PERoshchinite x rElectron Density=1,872.51 barns/cc.
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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: |
03.04.15.07 (03)Sulfides - Sulfosalts |
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(03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.04.15)Lillianite Group (Orthorhombic, AmBnS6 where A=Pb, Ag, Mn and B=Sb, Bi) |
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03.04.15.01 Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m |
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03.04.15.02 Bursaite? Pb5Bi4S11 Bbmm 2/m 2/m 2/m |
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03.04.15.03 Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m |
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03.04.15.04 Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m |
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03.04.15.05 Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m |
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03.04.15.06 Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m |
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03.04.15.07 Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m |
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03.04.15.08 Fizelyite Pb14Ag5Sb21S48(?) P 21/n 2/m |
| Strunz Class: |
02.JB.40a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.J - Sulfosalts of PbS Archetype |
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02.JB -Galena derivatives, with Pb |
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02.JB.40a Fizelyite Pb14Ag5Sb21S48(?) P 21/n 2/m |
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02.JB.40a Andorite PbAgSb3S6 Pmma 2/m 2/m 2/m |
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02.JB.40a Bursaite? Pb5Bi4S11 Bbmm 2/m 2/m 2/m |
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02.JB.40a Gustavite PbAgBi3S6(?) Bbmm 2/m 2/m 2/m |
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02.JB.40a Lillianite Pb3Bi2S6 Bbmm 2/m 2/m 2/m |
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02.JB.40a Roshchinite Ag19Pb10Sb51S96orPb(Ag,Cu)2(Sb,As)5S10 Pmna 2/m 2/m 2/m |
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02.JB.40a Uchucchacuaite AgPb3MnSb5S12 P mmm 2/m 2/m 2/m |
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02.JB.40a Ramdohrite Ag3Pb6Sb11S24 P 2/n 2/m |
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02.JB.40a Xilingolite Pb3Bi2S6 C 2/m 2/m |
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02.JB.40a Treasurite Ag7Pb6Bi15S32 B2/m 2/m |
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02.JB.40a Vikingite Ag5Pb8Bi13S30 C 2/m 2/m |
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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 - 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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Roshchinite
Ag19Pb10Sb51S96 or Pb(Ag,Cu)2(Sb,As)5S10
Dana No: 03.04.15.07 Strunz No: 02.JB.40a
Locality:
Notes:
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