| Locality type: | Mine |
| Classification |
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| Species: | Pumpellyite-(Mg) var: Chlorastrolite |
| Formula: | Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Data |
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| Mineral Data: | Click here to view Chlorastrolite data |
| Locality Data: | Click here to view Iron City Mine (Empire Mine), Mosquito Mining District, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 852954 |
| Long-form Identifier: | 1:3:852954:1 |
| GUID (UUID V4): | 64a74e44-7856-4829-9cef-b0d0303a3fab |
| Nearest other occurrences of Chlorastrolite |
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| 4.5km (2.8 miles) | āMedora Mine, Mandan, Grant Township, Keweenaw County, Michigan, USA |
| 11.4km (7.1 miles) | āDelaware Mine (Delaware Conglomerate Mine), Delaware, Grant Township, Keweenaw County, Michigan, USA |
| 13.9km (8.6 miles) | āWaterbury Mine, Eagle Harbor, Keweenaw County, Michigan, USA |
| 17.6km (10.9 miles) | āCentral Exploration Mine, Central, Houghton Township, Keweenaw County, Michigan, USA |
| 18.5km (11.5 miles) | āNorthwestern Mine, Central, Houghton Township, Keweenaw County, Michigan, USA |
| 18.7km (11.6 miles) | āCopper Falls, Eagle Harbor, Keweenaw County, Michigan, USA |
| 19.0km (11.8 miles) | āCentral Mine, Central, Houghton Township, Keweenaw County, Michigan, USA |
| 24.4km (15.2 miles) | āSt. Clair Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA |
| 25.3km (15.7 miles) | āPhoenix Mine, Phoenix, Houghton Township, Keweenaw County, Michigan, USA |
| 28.3km (17.6 miles) | āCliff Mine, Allouez Township, Keweenaw County, Michigan, USA |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | Michiganās Copper Country News from the Keweenaw Recent Mineral Finds in Michiganās Copper Country Downloaded...A l t h o u g h commercial copper mining has come to an end in the Copper Country, specimens reminiscent...heyday of mining are still being recovered. When one thinks of superb specimens from the Keweenaw, memories...groups of copper and silver crystals, colorful porcelaneous nodules of datolite, and copper inclusions...courtesy Michigan Technological University Archives and Copper Country Historical Collections, Michigan Technological |  | | Journal (article/letter/editorial) | | Lake Superior copper deposits, home to the worldās largest occurrence of native copper. Indeed, many...sport flecks of native copper, and specimens exist of datolite intergrown with copper crystals, but thatās...thatās getting ahead of the story. Michiganās Copper Country datolite has been collected, prized, fashioned...in celebrating the rich mineral heritage of the Keweenaw Peninsulaās datolite by diving into this article...Dyl II, Director A. E. Seumnii Mineral Museum Michigan Technological University 170 ROCKS 81MINERALS |
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Iron City Mine, Mosquito Mining District, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA