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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Cuprite from
Algomah Mine, Mass City, Ontonagon County, Michigan, USA


Locality type:Mine
Classification
Species:Cuprite
Formula:Cu2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cuprite data
Locality Data:Click here to view Algomah Mine, Mass City, Ontonagon County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:48481
Long-form Identifier:1:3:48481:3
GUID (UUID V4):0
Nearest other occurrences of Cuprite
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
5.5km (3.4 miles) ⓘIndiana Mine, Winona, Greenland Township, Ontonagon County, Michigan, USA
6.2km (3.9 miles) ⓘCaledonia Mine, Mass City, Ontonagon County, Michigan, USA
9.6km (6.0 miles) ⓘMichigan Mine, Rockland, Ontonagon County, Michigan, USA
10.9km (6.8 miles) ⓘMinesota Mine, Rockland, Ontonagon County, Michigan, USA
11.2km (7.0 miles) ⓘNational Mine, Rockland, Ontonagon County, Michigan, USA
38.9km (24.1 miles) ⓘWhite Pine Mine, White Pine, Ontonagon County, Michigan, USA
51.4km (32.0 miles) ⓘHuron Mine (Houghton Mine), Houghton, Houghton County, Michigan, USA
53.2km (33.0 miles) ⓘIsle Royal No. 1 shaft, Isle Royal Mines, Houghton, Houghton 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
 
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