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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Palygorskite from
Black Angel Mine, Maarmorilik, Avannaata, Greenland


00340910017362518289813.jpg
Palygorskite

Black Angel Mine, Maarmorilik, Avannaata, Greenland
00340910017362518289813.jpg
Palygorskite

Black Angel Mine, Maarmorilik, Avannaata, Greenland
01337430017272027643554.jpg
Palygorskite

Black Angel Mine, Maarmorilik, Avannaata, Greenland
Locality type:Mine
Classification
Species:Palygorskite
Formula:◻Al2Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O
Comments:Foliated, paper-like sheet characteristic of "mountain leather". Could also be sepiolite.
Habit:fibrous sheet
Colour:white (stained brown)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Palygorskite data
Locality Data:Click here to view Black Angel Mine, Maarmorilik, Avannaata, Greenland
Data Identifiers
Mindat Occurrence Record ID:1583709
Long-form Identifier:1:3:1583709:1
GUID (UUID V4):0
References
Ted Johnson collectionIdentification: Dealer/Collection Label
 
and/or  
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