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Larosite Mineral Data
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General Larosite Information
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 Chemical Formula: |
(Cu,Ag)21(Pb,Bi)2S13 |
| Composition: |
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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100.00 % |
| Empirical Formula: |
Cu19Ag2PbBiS13 |
| Environment: |
Central portion of a vein with chalcocite and stromeyerite. |
| IMA Status: |
Approved IMA 1972 |
| Locality: |
Foster mine, Cobalt, Ontario, Canada. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Fred LaRose, a discoverer of silver ore at Cobalt. |
| Name Pronunciation: |
Larosite  |
| Synonym: |
IMA1971-014 |
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