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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Sillimanite from
B.B. Whitney Farm, Baldwin - Standish, Standish, Cumberland County, Maine, USA


Locality type:Construction Site
Classification
Species:Sillimanite
Formula:Al2(SiO4)O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sillimanite data
Locality Data:Click here to view B.B. Whitney Farm, Baldwin - Standish, Standish, Cumberland County, Maine, USA
Data Identifiers
Mindat Occurrence Record ID:36113
Long-form Identifier:1:3:36113:2
GUID (UUID V4):0
References
 
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