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Prehnite from
Clark Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA


06450060017362138977846.jpg
Prehnite, etc.

Clark Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA
06450060017362138977846.jpg
Prehnite, etc.

Clark Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA
06450060017362138977846.jpg
Prehnite, etc.

Clark Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA
Locality type:Mine
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Native Copper4
Quartz1
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Clark Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:58208
Long-form Identifier:1:3:58208:1
GUID (UUID V4):0
Nearest other occurrences of Prehnite
0.9km (0.5 miles) ⓘCape Mine, Mosquito Mining District, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA
0.9km (0.5 miles) ⓘStar Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA
1.1km (0.7 miles) ⓘManganese Mine, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA
3.3km (2.1 miles) ⓘCopper Harbor, Grant Township, Keweenaw County, Michigan, USA
3.9km (2.4 miles) ⓘNew York and Michigan Exploration, Grant Township, Keweenaw County, Michigan, USA
5.0km (3.1 miles) ⓘLac La Belle exploration, Lac La Belle, Grant Township, Keweenaw County, Michigan, USA
5.2km (3.3 miles) ⓘAetna Exploration Copper Mine, Grant Township, Keweenaw County, Michigan, USA
5.5km (3.4 miles) ⓘVulcan Exploration Copper Mine, Grant Township, Keweenaw County, Michigan, USA
7.4km (4.6 miles) ⓘHard Rock fissure, Mosquito Mining District, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA
7.4km (4.6 miles) ⓘPoint Prospect, Grant Township, Keweenaw County, Michigan, USA
References
Rocks & Min.:58:182.
Rosemeyer, Tom (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District (Part 1) Rocks & Minerals, 84 (4) 298-306 doi:10.3200/rmin.84.4.298-306part1
 
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