General Larosite Information![]() (Cu,Ag)21(Pb,Bi)2S13 |
![]() Molecular Weight = 2,256.15 gm |
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Copper 53.51 % Cu |
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Silver 9.56 % Ag |
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Bismuth 9.26 % Bi |
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Lead 9.18 % Pb |
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Sulfur 18.48 % S |
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______ |
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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. |
![]() Larosite |
![]() ![]() IMA1971-014 |
| | Search for Larosite Images
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| | Larosite Crystallography![]() 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![]() 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![]() Moderate, in gray and greenish buff. |
![]() Whitish buff. |
![]() Weak. |
| Calculated Properties of Larosite![]() Bulk Density (Electron Density)=5.44 gm/cc |
note: Specific Gravity of Larosite =6.03 gm/cc. ![]() Fermion Index = 0.02 |
Boson Index = 0.98 ![]() PELarosite = 371.54 barns/electron |
U=PELarosite x rElectron Density=2,021.76 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Larosite is Not Radioactive | Larosite Classification![]() 02.16.09.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.16)with miscellaneous formulae |
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(02.16.09)Dana Group |
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![]() 02.LB.35 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.L - Unclassified Sulfosalts |
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02.LB -With essential Pb |
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| Other Larosite Information![]() 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 - 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 Search for Larosite using: Visit our Advertisers for Larosite : A Bijoux Google Search for LarositeAdam's Minerals Google Search for Larosite Cape Minerals Google Search for Larosite Dakota Matrix Minerals Google Search for Larosite Excalibur Mineral Corp. Google Search for Larosite Exceptional Minerals Google Search for Larosite John Betts Fine Minerals Search for Larosite McDougall Minerals Google Search for Larosite Mineral News Website Link Rock and Mineral Shows Google Search for Larosite Weinrich Minerals, Inc. Google Search for Larosite Ask about Larosite here : Print or Cut-and-Paste your Larosite Specimen Label here :
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