Ca2(Mg,Fe)4Al(Si7Al)O22(OH,F)2
Color: green to black
Hardness: 5.5
Streak: pale green
Cleavage: 2 (60¡ and 120¡)
Luster: non-metallic
Other Properties: insoluble
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Amphibole (Hornblende)
Ca2(Mg,Fe)4Al(Si7Al)O22(OH,F)2 Color: green to black Hardness: 5.5 Streak: pale green Cleavage: 2 (60¡ and 120¡) Luster: non-metallic Other Properties: insoluble |
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