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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Psilomelane from
Marivolanitra pegmatite, Mandrosonoro, Ambatofinandrahana District, Amoron'i Mania, Madagascar


Locality type:Pegmatite
Classification
Species:'Psilomelane' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Psilomelane data
Locality Data:Click here to view Marivolanitra pegmatite, Mandrosonoro, Ambatofinandrahana District, Amoron'i Mania, Madagascar
Data Identifiers
Mindat Occurrence Record ID:609753
Long-form Identifier:1:3:609753:0
GUID (UUID V4):0
References
Behier, Jean (1960) Contribution à la minéralogie de Madagascar. Annales géologiques de Madagascar Vol. 29. République Malgachepp.20-20
 
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