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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Anhydrite from
Mass Mine, Mass Consolidated Mine, Mass City, Ontonagon County, Michigan, USA


Locality type:Mine
Classification
Species:Anhydrite
Formula:CaSO4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Anhydrite data
Locality Data:Click here to view Mass Mine, Mass Consolidated Mine, Mass City, Ontonagon County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:94902
Long-form Identifier:1:3:94902:8
GUID (UUID V4):0
Nearest other occurrences of Anhydrite
52.8km (32.8 miles) ⓘIsle Royal No. 6 shaft, Isle Royal Mines, Portage Township, Houghton County, Michigan, USA
53.4km (33.2 miles) ⓘIsle Royal No. 5 shaft, Isle Royal Mines, Portage Township, Houghton County, Michigan, USA
54.0km (33.5 miles) ⓘIsle Royal No. 4 shaft, Isle Royal Mines, Portage Township, Houghton County, Michigan, USA
54.0km (33.5 miles) ⓘIsle Royal Mines, Portage Township, Houghton County, Michigan, USA
54.2km (33.7 miles) ⓘHuron Mine (Houghton Mine), Houghton, Houghton County, Michigan, USA
69.5km (43.2 miles) ⓘUnited States Metals Refining Company exploration (Copperwood Mine), Gogebic County, Michigan, USA
89.5km (55.6 miles) ⓘChampion Mine, Champion, Champion Township, Marquette County, Michigan, USA
89.9km (55.9 miles) ⓘCliff Mine, Allouez Township, Keweenaw County, Michigan, USA
References
Rosemeyer, T. (1990) Through the Scope: Microminerals of the Caledonia Mine Ontonagon County, Michigan. Rocks & Minerals: 65(3): 240.
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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