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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Chrome-Spinel (of Dana) from
Vispi Quarry, San Venanzo, Terni Province, Umbria, Italy


Locality type:Quarry
Classification
Species:'Chrome-Spinel (of Dana)' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chrome-Spinel (of Dana) data
Locality Data:Click here to view Vispi Quarry, San Venanzo, Terni Province, Umbria, Italy
Data Identifiers
Mindat Occurrence Record ID:557609
Long-form Identifier:1:3:557609:8
GUID (UUID V4):0
References
Stoppa, F., Sharygin, V. V., Cundari, A. (1997) New mineral data from the kamafugite-carbonatite association: The melilitolite from Pian di Celle, Italy. Mineralogy and Petrology, 61 (1) 27-45 doi:10.1007/bf01172476
 
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