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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Iddingsite from
Trinity County, California, USA


Locality type:County
Classification
Species:'Iddingsite' (not an IMA approved species)
Comments:Occurs associated with olivine.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Iddingsite data
Locality Data:Click here to view Trinity County, California, USA
Data Identifiers
Mindat Occurrence Record ID:683063
Long-form Identifier:1:3:683063:2
GUID (UUID V4):0
References
Bradley, W.W. (1940), Thirty-sixth report of the State Mineralogist: California Division Mines Report 36: 106
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 224
 
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