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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Ikaite from
Weddell Sea, West Antarctica, Antarctica


Locality type:Sea
Classification
Species:Ikaite
Formula:CaCO3 · 6H2O
Comments:In sea ice.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ikaite data
Locality Data:Click here to view Weddell Sea, West Antarctica, Antarctica
Data Identifiers
Mindat Occurrence Record ID:566159
Long-form Identifier:1:3:566159:6
GUID (UUID V4):0
References
Dieckmann, Gerhard S.; Nehrke, Gernot; Papadimitriou, Stathys; Göttlicher, Jörg; Steininger, Ralph; Kennedy, Hilary; Wolf‐Gladrow, Dieter; Thomas, David N. (2008) Calcium carbonate as ikaite crystals in Antarctic sea ice. Geophysical Research Letters, 35 (8). p.L08501. doi:10.1029/2008gl033540
 
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