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MINERALOGY

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Mineral: FERROFERRISADANAGAITE
Name: Ferro-ferri-sadanagaite
Formula: {Na}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2
Crystal System: Monoclinic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Ca subgroup. Sadanagaite group
References: AM 97 (2012), 2031
Type Locality: Poudrette quarry, Mont Saint-Hilaire, Rouville Co., Québec, Canada

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