|  |  | 
	 Carrollite Mineral Data  |  |  | 
   
| General Carrollite  Information  | 
|  Chemical  Formula: | Cu(Co,Ni)2S4 | 
|  Composition: | Molecular Weight = 309.55 gm | 
|  | Cobalt  28.56 %  Co | 
|  | Copper  20.53 %  Cu | 
|  | Nickel   9.48 %  Ni | 
|  | Sulfur  41.43 %  S | 
|  | ______ | 
|  | 100.00 % | 
|  Empirical Formula: | CuCo1.5Ni0.5S4 | 
|  Environment: | In hydrothermal vein deposits. | 
|  IMA Status: | Valid Species (Pre-IMA) 1852 | 
|  Locality: | In the USA, in the Patapsco mine, Finksburg, and the Mineral Hill mine, Sykesville, Carroll Co., Maryland. Link to MinDat.org Location Data. | 
|  Name Origin: | For its occurrence in Carroll Co., Maryland, USA. | 
|  Name Pronunciation: | Carrollite  + Pronunciation   | 
|  Synonym: | ICSD 31107 | 
|  | PDF 42-1450 | 
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