AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
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Black AMPHIBOLE (HORNBLENDE) phenocryst in light gray volcanic matrix Black Tuesday Claim |
Black AMPHIBOLE (HORNBLENDE) phenocryst in light gray volcanic matrix Black Tuesday Claim |
AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
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Black AMPHIBOLE (HORNBLENDE) phenocryst in light gray volcanic matrix Black Tuesday Claim |
Black AMPHIBOLE (HORNBLENDE) phenocryst in light gray volcanic matrix Black Tuesday Claim |