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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Corrensite from
Monzogranite outcrop, Le Mayet-de-Montagne, Vichy, Allier, Auvergne-Rhône-Alpes, France


Locality type:Outcrop
Classification
Species:Corrensite
Formula:(Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O
Comments:Magnesian corrensite.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Corrensite data
Locality Data:Click here to view Monzogranite outcrop, Le Mayet-de-Montagne, Vichy, Allier, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:253223
Long-form Identifier:1:3:253223:3
GUID (UUID V4):0
References
Parneix, Jean-Claude, Meunier, Alain (1982) Les paragenèses de remplacement des biotites utilisées comme marqueurs des conditions de température et de composition des fluides dans les altérations hydrothermale et supergène du granite de Mayet-de-Montagne (Allier, France) Bulletin de Minéralogie, 105 (6) 662-672 doi:10.3406/bulmi.1982.7650
 
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