| Locality type: | Mine |
| Classification |
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| Species: | Copper |
| Formula: | Cu |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Datolite | ⓘ2 photos of Copper associated with Datolite at this locality. |
| Data |
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| Mineral Data: | Click here to view Copper data |
| Locality Data: | Click here to view Flintsteel Mine (Nassau Mine; Old Flintsteel Mine; Superior-Nassau Superior Mine), Mass City, Ontonagon County, Michigan, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 172461 |
| Long-form Identifier: | 1:3:172461:5 |
| GUID (UUID V4): | d5aade12-b9ed-40e0-9558-7b54959023b2 |
| Nearest other occurrences of Copper |
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| 0.3km (0.2 miles) | ⓘLake Superior Mine, Ontonagon County, Michigan, USA |
| 0.9km (0.5 miles) | ⓘBumblebee Mine, Rockland, Ontonagon County, Michigan, USA |
| 1.1km (0.7 miles) | ⓘFlintsteel River Mine, Ontonagon County, Michigan, USA |
| 1.6km (1.0 miles) | ⓘMichigan Mine, Rockland, Ontonagon County, Michigan, USA |
| 1.8km (1.1 miles) | ⓘRockland Mine, Rockland, Ontonagon County, Michigan, USA |
| 2.0km (1.2 miles) | ⓘNebraska Mine, Mass City, Ontonagon County, Michigan, USA |
| 2.1km (1.3 miles) | ⓘCaledonia Mine, Mass City, Ontonagon County, Michigan, USA |
| 2.6km (1.6 miles) | ⓘVulcan Mine, Ontonagon County, Michigan, USA |
| 2.7km (1.7 miles) | ⓘKnowlton Mine, Mass City, Ontonagon County, Michigan, USA |
| 2.7km (1.7 miles) | ⓘMinesota Mine, Rockland, Ontonagon County, Michigan, USA |
| References |
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