| Locality type: | Mine |
| Classification |
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| Species: | Prehnite |
| Formula: | Ca2Al2Si3O10(OH)2 |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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|
| Native Copper | 10 |
| Calcite | 8 |
| Chalcocite | 6 |
| Malachite | 4 |
| Cuprite | 2 |
| - var Chalcotrichite | 2 |
| Hematite | 1 |
| Data |
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| Mineral Data: | Click here to view Prehnite data |
| Locality Data: | Click here to view Unnamed Copper Mine, Knife River, Saint Louis County, Minnesota, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1582334 |
| Long-form Identifier: | 1:3:1582334:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Prehnite |
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| 1.7km (1.0 miles) | ⓘKnife River, Saint Louis County, Minnesota, USA |
| 2.2km (1.4 miles) | ⓘKnife River, Lake County, Minnesota, USA |
| 5.1km (3.2 miles) | ⓘBig Sucker Creek, Saint Louis County, Minnesota, USA |
| 9.3km (5.8 miles) | ⓘFrench River, Saint Louis County, Minnesota, USA |
| 11.8km (7.3 miles) | ⓘTalmadge River, Saint Louis County, Minnesota, USA |
| 13.6km (8.4 miles) | ⓘBurlington Bay, Two Harbors, Lake County, Minnesota, USA |
| 16.5km (10.3 miles) | ⓘStewart River, Lake County, Minnesota, USA |
| 40.5km (25.1 miles) | ⓘBuckley Quarry, Amnicon Falls, Douglas County, Wisconsin, USA |
| 40.9km (25.4 miles) | ⓘPercival copper prospects, Douglas County, Wisconsin, USA |
| 41.2km (25.6 miles) | ⓘChippewa Mine, Douglas County, Wisconsin, USA |
| References |
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Unnamed Copper Mine, Knife River, Saint Louis County, Minnesota, USA