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MINERALOGY

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Mineral: FERROHORNBLENDE
Name: Magnesio-hornblende
Formula: ▢Ca2[Fe2+4(Al,Fe3+)]Si7AlO22(OH)2
Crystal System: Monoclinic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Ca subgroup. Hornblende group
IMA Number: 2012 s.p.
References: Indian Minerals 41 (1987), 32; HB2/1 (1995); CM 35 (1997), 219
Comments: ▢ = vacancy

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