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ATHENA

MINERALOGY

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Mineral: ACTINOLITE
Formula: ▢Ca2(Mg,Fe2+)5Si8O22(OH)2
Crystal System: Monoclinic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Ca subgroup
IMA Number: 2012 s.p.
References: HB2/1 (1995); L 9 (1998), 7; MR (1998), 169
Comments: ▢ = vacancy

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