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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Ernstite from
Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia


Locality type:Farm
Classification
Species:Ernstite
Formula:(Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2O
Comments:The way this mineral is described, it is a ferrian variety of eosphorite where the Mn>Fe.
Confirmation
Validity:Valid - Type Locality
Data
Mineral Data:Click here to view Ernstite data
Locality Data:Click here to view Davib Ost Farm 61, Karibib Constituency, Erongo Region, Namibia
Data Identifiers
Mindat Occurrence Record ID:4998
Long-form Identifier:1:3:4998:6
GUID (UUID V4):0
References
Seeliger, E., Mücke, A. (1970) Ernstit, ein neues Mn2+-Fe3+-Al-Phosphat und seine Beziehungen zum Eosphorit. Neues Jahrbuch für Mineralogie, Monatshefte: 1970: 289-298.
(1971) Mineral Notes. The Mineralogical Record, 2 (3) 129pp.129-129
 
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