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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Datolite from
Butler Mine, Mass City, Ontonagon County, Michigan, USA


Locality type:Mine
Classification
Species:Datolite
Formula:CaB(SiO4)(OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Datolite data
Locality Data:Click here to view Butler Mine, Mass City, Ontonagon County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:306175
Long-form Identifier:1:3:306175:6
GUID (UUID V4):0
Nearest other occurrences of Datolite
0.4km (0.2 miles) ⓘBelt Mine (Piscatauqua), Mass City, Ontonagon County, Michigan, USA
0.9km (0.6 miles) ⓘSouth Lake Mine (Aztec Mine), Mass City, Ontonagon County, Michigan, USA
1.2km (0.7 miles) ⓘLake Mine (Great Western Mine; Bohemian), Mass City, Ontonagon County, Michigan, USA
1.6km (1.0 miles) ⓘNorth Lake Mine, Ontonagon County, Michigan, USA
1.7km (1.1 miles) ⓘAlgomah Mine, Mass City, Ontonagon County, Michigan, USA
1.9km (1.2 miles) ⓘHilton Mine (Ohio Mine), Greenland, Greenland Township, Ontonagon County, Michigan, USA
3.1km (1.9 miles) ⓘAdventure mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
4.3km (2.7 miles) ⓘIndiana Mine, Winona, 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
References
Rosemeyer, Tom (2005) The Occurrence of Porcelaneous Datolite in Michigan's Lake Superior Copper District. Rocks & Minerals, 80 (3) 154-177 doi:10.3200/rmin.80.3.154-177
 
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