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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Fayalite-Forsterite Series from
Koidu-Yengema, Kono District, Eastern Province, Sierra Leone


Locality type:Mining Area
Classification
Species:'Fayalite-Forsterite Series' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Fayalite-Forsterite Series data
Locality Data:Click here to view Koidu-Yengema, Kono District, Eastern Province, Sierra Leone
Data Identifiers
Mindat Occurrence Record ID:1237757
Long-form Identifier:1:3:1237757:0
GUID (UUID V4):0
References
Haggerty, S. E., Hargraves, R. B., & Tompkins, L. A. (1990). Oxide mineralogy and magnetic properties of the Koidu kimberlite complex, Sierra Leone, west Africa. Geophysical Journal International, 100(2), 275-283.
Mitchell, R. H. (Ed.). (2004). 8th International Kimberlite Conference: The C. Roger Clement volume (Vol. 1). Gulf Professional Publishing.
 
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