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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Chromium-bearing Diopside from
Six-Pak lamprophyre diatreme (Six Pack pipe), Kenosha, Kenosha County, Wisconsin, USA


Locality type:Diatreme
Classification
Species:Diopside var: Chromium-bearing Diopside
Formula:Ca(Mg,Cr)Si2O6
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chromium-bearing Diopside data
Locality Data:Click here to view Six-Pak lamprophyre diatreme (Six Pack pipe), Kenosha, Kenosha County, Wisconsin, USA
Data Identifiers
Mindat Occurrence Record ID:128262
Long-form Identifier:1:3:128262:7
GUID (UUID V4):0
References
Carlson, S. & G. Adams (1998) The diamondiferous Six-Pak Ultramafic Lamprophyre Diatreme, Kenosha, Wisconsin, U.S.A.: 43rd. Institute on Lake Superior Geology Abst. with Programs: 11-12.
 
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