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
Niah Great Cave (Gunong Jerneb), Miri Division, Sarawak, Malaysia


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 Niah Great Cave (Gunong Jerneb), Miri Division, Sarawak, Malaysia
Data Identifiers
Mindat Occurrence Record ID:464278
Long-form Identifier:1:3:464278:7
GUID (UUID V4):0
References
Bridge, P. J., Robinson, B. W. (1983) Niahite—A new mineral from Malaysia. Mineralogical Magazine, 47 (342) 79-80 doi:10.1180/minmag.1983.047.342.14
 
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