Experimental phase-equilibrium study of Al- and Ti-contents of calcic amphibole in MORB; a semiquantitative thermobarometer

Given that Al tends to replace Si in tetrahedral coordination in Ca-amphibole with increasing T and that Al substitutes for Mg+Fe in the M2 octahedral site to progressively greater extents with increasing P, increasing Al2O3 contents of Ca-amphibole should reflect, in general, increasing P and T (i....

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