| Locality type: | Claim |
| Classification |
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| Species: | Pyrrhotite |
| Formula: | Fe7S8 |
| Confirmation |
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| Validity: | Believed Valid |
| References |
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| References: | U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
| Data |
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| Mineral Data: | Click here to view Pyrrhotite data |
| Locality Data: | Click here to view Ace High Claims (Fall River Group; Dennis D. Claims), Slavonia Mining District, Routt Co., Colorado, USA |
| Nearest other occurrences of Pyrrhotite |
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| 22.0km (13.7 miles) | | ⓘCaprock prospect, Pearl Mining District, Jackson Co., Colorado, USA |
| 54.9km (34.1 miles) | | ⓘCreede Prospect, Encampment District, Carbon Co., Wyoming, USA |
| 55.6km (34.5 miles) | | ⓘIsland City Group Prospect, Encampment District, Carbon Co., Wyoming, USA |
| 55.7km (34.6 miles) | | ⓘNew Rambler mine (Rambler Mine; Holmes Mine; Electrolytic Mine; Great Rambler Mine), New Rambler Mining District, Albany Co., Wyoming, USA |
| 58.0km (36.1 miles) | | ⓘLeighton - Gentry Prospect, Encampment District, Carbon Co., Wyoming, USA |
| 59.5km (37.0 miles) | | ⓘUnidentified Prospect (MRDS - 10080911), Ketchum Buttes Area, Carbon Co., Wyoming, USA |
| 97.6km (60.7 miles) | | ⓘCopper King Mine (Claims: Black Hawk No. 1; Black Hawk No. 2), Prairie Divide Mining District (St. Cloud Mining District), Larimer Co., Colorado, USA |