Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Native Copper from
Algomah Mine, Mass City, Ontonagon County, Michigan, USA


Locality type:Mine
Classification
Species:Native Copper
Formula:Cu
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Native Copper data
Locality Data:Click here to view Algomah Mine, Mass City, Ontonagon County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:48480
Long-form Identifier:1:3:48480:4
GUID (UUID V4):0
Nearest other occurrences of Native Copper
0.6km (0.4 miles) ⓘLake Mine (Great Western Mine; Bohemian), Mass City, Ontonagon County, Michigan, USA
1.9km (1.2 miles) ⓘSouth Lake Mine (Aztec Mine), Mass City, Ontonagon County, Michigan, USA
2.0km (1.3 miles) ⓘBelt Mine (Piscatauqua), Mass City, Ontonagon County, Michigan, USA
2.4km (1.5 miles) ⓘHilton Mine (Ohio Mine), Greenland, Greenland Township, Ontonagon County, Michigan, USA
2.8km (1.7 miles) ⓘNorth Lake Mine, Ontonagon County, Michigan, USA
3.1km (1.9 miles) ⓘToltec Mine, Mass City, Ontonagon County, Michigan, USA
3.5km (2.2 miles) ⓘAdventure mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
4.4km (2.7 miles) ⓘRidge Mine, Mass Consolidated Mine, Mass City, Ontonagon County, Michigan, USA
4.5km (2.8 miles) ⓘMass Consolidated Mine, Mass City, Ontonagon County, Michigan, USA
4.5km (2.8 miles) ⓘMass Mine, Mass Consolidated Mine, Mass City, Ontonagon County, Michigan, USA
References
Williams, S. A. (1962) Stability relations and paragenesis of copper oxides and chlorides at the Algomah Mine, Ontonagon County, Michigan. Economic Geology: 57(1): 111-113.
Morris, Tom (1983) Michigan Mineralogy. A locality Index. Rocks & Minerals, 58 (3). 107-113 doi:10.1080/00357529.1983.11767128p.112
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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