ATHENA MINERALOGY |
Mineral: | BARROISITE |
---|---|
Formula: | ▢(CaNa)Mg3AlFe3+Si7AlO22(OH)2 |
Crystal System: | Monoclinic |
Group: | Amphibole supergroup, with (OH,F,Cl) dominant. Na-Ca subgroup. Barroisite group |
IMA Number: | 2012 s.p. |
References: | AM 63 (1978), 1023; HB2/1 (1995) |
Comments: | ▢ = vacancy |
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