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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Thomsonite Subgroup from
South Range Quarry, South Range, Adams Township, Houghton County, Michigan, USA


Locality type:Quarry
Classification
Species:'Thomsonite Subgroup' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Thomsonite Subgroup data
Locality Data:Click here to view South Range Quarry, South Range, Adams Township, Houghton County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:416683
Long-form Identifier:1:3:416683:2
GUID (UUID V4):0
Nearest other occurrences of Thomsonite Subgroup
1.8km (1.1 miles) ⓘBaltic No. 2 shaft, Baltic Mine, Baltic, Adams Township, Houghton County, Michigan, USA
21.1km (13.1 miles) ⓘNo. 3 shaft, Osceola Mine, Osceola, Calumet Township, Houghton County, Michigan, USA
21.4km (13.3 miles) ⓘNo. 2 shaft, Osceola Mine, Osceola, Calumet Township, Houghton County, Michigan, USA
25.1km (15.6 miles) ⓘTamarack Waterworks Beach, Calumet Township, Houghton County, Michigan, USA
27.8km (17.3 miles) ⓘKearsarge, Calumet Township, Houghton County, Michigan, USA
36.8km (22.8 miles) ⓘSeven Mile Point, Allouez Township, Keweenaw County, Michigan, USA
40.6km (25.3 miles) ⓘFive Mile Point, Allouez Township, Keweenaw County, Michigan, USA
51.0km (31.7 miles) ⓘAshbed Mine, Copper Falls, Eagle Harbor Township, Keweenaw County, Michigan, USA
69.8km (43.4 miles) ⓘLakeshore traps, Eagle Harbor Township, Keweenaw County, Michigan, USA
71.6km (44.5 miles) ⓘCopper Harbor, Grant Township, Keweenaw County, Michigan, USA
References
Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
 
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