| Locality type: | Mine |
| Classification |
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| Species: | Muscovite |
| Formula: | KAl2(AlSi3O10)(OH)2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Muscovite data |
| Locality Data: | Click here to view Isle Royal Mines, Portage Township, Houghton County, Michigan, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 986180 |
| Long-form Identifier: | 1:3:986180:0 |
| GUID (UUID V4): | 28b3f33c-2dd4-4265-af3e-0ccfbb1802bb |
| Nearest other occurrences of Muscovite |
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| 2.8km (1.7 miles) | ⓘSuperior Mine (Old Superior Mine), Superior, Portage Township, Houghton County, Michigan, USA |
| 4.4km (2.7 miles) | ⓘQuincy Mine, Quincy Township, Houghton County, Michigan, USA |
| 4.5km (2.8 miles) | ⓘBaltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA |
| 7.0km (4.3 miles) | ⓘArcadian Mine, Ripley, Franklin Township, Houghton County, Michigan, USA |
| 9.2km (5.7 miles) | ⓘChampion Mine, Champion Mine, Adams Township, Houghton County, Michigan, USA |
| 22.9km (14.2 miles) | ⓘWolverine Mine, Wolverine, Calumet Township, Houghton County, Michigan, USA |
| 23.3km (14.5 miles) | ⓘKearsarge, Calumet Township, Houghton County, Michigan, USA |
| 25.8km (16.0 miles) | ⓘArsenide Fissure, Ahmeek Mine, Ahmeek, Allouez Township, Keweenaw County, Michigan, USA |
| 26.7km (16.6 miles) | ⓘMass Fissure, Ahmeek Mine, Ahmeek, Allouez Township, Keweenaw County, Michigan, USA |
| 39.2km (24.3 miles) | ⓘJacobsville Sandstone, Gay, Sherman Township, Keweenaw County, Michigan, USA |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (issue) | | . . . . 3.50 C•ppar wlu11cl I■ Calcite xis., Michigan. Fair quality. 2 ½ x I ½ . . . . . 2.50 C.rlBiniN... fancy sapphire (which would involve no larger mines are developed and run by ' the reduction in value)...Calcutta is in the middle of a huge six of the mines. These were selected as : an ficial Bood-plain or...electrical industry. I was lucky the dike. The mines are first developed l in• enough to secure a letter...off the train, he met me with of the books of muscovite than rrught be bing a car and invited me to stay |
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