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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Hannayite from
Cave No. 14A, Mount Suswa (Suswa Volcano), Kajiado County, Kenya


Locality type:Cave
Classification
Species:Hannayite
Formula:(NH4)2Mg3H4(PO4)4 · 8H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hannayite data
Locality Data:Click here to view Cave No. 14A, Mount Suswa (Suswa Volcano), Kajiado County, Kenya
Data Identifiers
Mindat Occurrence Record ID:458925
Long-form Identifier:1:3:458925:9
GUID (UUID V4):0
References
Forti, P., E. Galli & A. Rossi (2004):"Minerogenesis of volcanic caves of Kenya" , Int. J. Speleol. 32, 3-18
 
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