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ATHENA

MINERALOGY

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Mineral: FERRIBARROISITE
Name: Ferri-barroisite
Formula: ▢(CaNa)Mg3Fe3+2Si7AlO22(OH)2
Crystal System: Monoclinic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Na-Ca subgroup. Barroisite group
References: MM 42 (1978), 554; CM 35 (1997), 219
Comments: ▢ = vacancy

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