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ATHENA

MINERALOGY

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Mineral: FERROFERRIHORNBLENDE
Name: Ferro-ferri-hornblende
Formula: ▢Ca2(Fe2+4Fe3+)(Si7Al)O22(OH)2
Crystal System: Monoclinic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Ca subgroup. Hornblende group
IMA Number: 2015-054
References: MM 79/5 (2015), 1227
Type Locality: Miniera Traversella, Val Chiusella, Canavese, Torino, Piemonte (Piedmont), Italy
Comments: ▢ = vacancy

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