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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Halloysite from
Ilímaussaq complex, Kujalleq, Greenland


Locality type:Complex
Classification
Species:Halloysite
Formula:Al2Si2O5(OH)4 · n(H2O)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Halloysite data
Locality Data:Click here to view Ilímaussaq complex, Kujalleq, Greenland
Data Identifiers
Mindat Occurrence Record ID:6003
Long-form Identifier:1:3:6003:5
GUID (UUID V4):0
References
Petersen, Ole V., Secher, Karsten (1993) The Minerals of Greenland. The Mineralogical Record, 24 (2) 1-67
Petersen, Ole V. (2001) List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin, 190 (190) 25-33 doi:10.34194/ggub.v190.5171
 
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