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Larosite Mineral Data + |
General Larosite Information |
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| (Cu,Ag)21(Pb,Bi)2S13 | |||
| Molecular Weight = 2,256.15 gm | |||
| Copper 53.51 % Cu | |||
| Silver 9.56 % Ag | |||
| Bismuth 9.26 % Bi | |||
| Lead 9.18 % Pb | |||
| Sulfur 18.48 % S | |||
| ______ | |||
| 100.00 % | |||
| Cu19Ag2PbBiS13 | |||
| Central portion of a vein with chalcocite and stromeyerite. | |||
| Approved IMA 1972 | |||
| Foster mine, Cobalt, Ontario, Canada. Link to MinDat.org Location Data. | |||
| Named for Fred LaRose, a discoverer of silver ore at Cobalt. | |||
| IMA1971-014 | |||
Search for Larosite Images | |||
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Larosite Crystallography |
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| a:b:c =0.9217:1:0.4856 | |||
| a = 22.15, b = 24.03, c = 11.67, Z = 10; V = 6,211.53 Den(Calc)= 6.03 | |||
| OrthorhombicSpace Group: Unk | |||
| By Intensity(I/Io): 1.982(1), 2.917(0.9), 2.846(0.6), | |||
Physical Properties of Larosite |
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| Black. | |||
| Opaque | |||
| Acicular - Occurs as needle-like crystals. | |||
| Microscopic Crystals - Crystals visible only with microscopes. | |||
| 3-3.5 - Calcite-Copper Penny | |||
| Metallic | |||
Optical Properties of Larosite |
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| Moderate, in gray and greenish buff. | |||
| Whitish buff. | |||
| Weak. | |||
Calculated Properties of Larosite |
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relectron=5.44 gm/cc |
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| Fermion Index = 0.02168 Boson Index = 0.97832 |
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PELarosite = 371.54 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Larosite is Not Radioactive |
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Larosite Classification |
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| 2.16.9.1 (2)Sulfides - Including Selenides and Tellurides | |||
| (2.16)with miscellaneous formulae | |||
| (2.16.9)Dana Group | |||
| II/E.02-10 II - Sulfides and sulphosalts | |||
| II/E - Sulfosalts (S : As,Sb,Bi = x), Sulfosalts with predominant Iron and Copper x = 2.0 | |||
| II/E.02 - Larosite series | |||
Other Larosite Information |
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| NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) | |||
| Links to other databases for Larosite : 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 Larosite using: Visit our Advertisers for Larosite : Translate Larosite Mineral Data : Ask about Larosite here : Print or Cut-and-Paste your Larosite Specimen Label here :
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