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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Andalusite from
Michigamme Slate, Lake Mary Quadrangle, Mastodon Township, Iron County, Michigan, USA


Locality type:Occurrence
Classification
Species:Andalusite
Formula:Al2(SiO4)O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Andalusite data
Locality Data:Click here to view Michigamme Slate, Lake Mary Quadrangle, Mastodon Township, Iron County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:401016
Long-form Identifier:1:3:401016:6
GUID (UUID V4):0
Nearest other occurrences of Andalusite
44.9km (27.9 miles) ⓘUnnamed pegmatite, Republic Mine, Republic, Republic Township, Marquette County, Michigan, USA
46.0km (28.6 miles) ⓘRepublic Mine, Republic, Republic Township, Marquette County, Michigan, USA
49.7km (30.9 miles) ⓘLake Michigamme (2), Michigamme, Marquette County, Michigan, USA
54.0km (33.6 miles) ⓘLake Michigamme, Michigamme, Marquette County, Michigan, USA
57.1km (35.5 miles) ⓘChampion Mine, Champion, Champion Township, Marquette County, Michigan, USA
57.4km (35.6 miles) ⓘMichigamme Slate, Michigamme Township, Marquette County, Michigan, USA
58.6km (36.4 miles) ⓘMichigamme Mine, Michigamme, Michigamme Township, Marquette County, Michigan, USA
79.4km (49.4 miles) ⓘThunder Mountain, Marinette County, Wisconsin, 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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