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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Allanite Group from
North Qôroq Centre, Igaliku Complex, Kujalleq, Greenland


Locality type:Intrusion
Classification
Species:'Allanite Group' (not an IMA approved species)
Formula:(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Allanite Group data
Locality Data:Click here to view North Qôroq Centre, Igaliku Complex, Kujalleq, Greenland
Data Identifiers
Mindat Occurrence Record ID:157121
Long-form Identifier:1:3:157121:9
GUID (UUID V4):0
References
Coulson, Ian M. (1997) Post-magmatic alteration in eudialyte from the North Qôroq centre, South Greenland. Mineralogical Magazine, 61 (404) 99-109 doi:10.1180/minmag.1997.061.404.10
 
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