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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Opalite from
Stuart Creek Opal Diggings, Mulgaria, Pastoral Unincorporated Area, South Australia, Australia


Locality type:Diggings
Classification
Species:'Opalite' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opalite data
Locality Data:Click here to view Stuart Creek Opal Diggings, Mulgaria, Pastoral Unincorporated Area, South Australia, Australia
Data Identifiers
Mindat Occurrence Record ID:1654841
Long-form Identifier:1:3:1654841:3
GUID (UUID V4):0
References
Thiry, M., & Milnes, A. R. (1991). Pedogenic and groundwater silcretes at Stuart Creek opal field, South Australia. Journal of Sedimentary Research, 61(1).
 
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