Figure F104. A. Primary mineral assemblage in coarse-grained oxide gabbro (interval 305-U1309D-87R-2, 59–76 cm). B. Typical amphibole-bearing oxide gabbro (interval 305-U1309D-130R-1, 43–63 cm). Green amphiboles have an elongate bladed shape and may be partly replacing primary magmatic amphiboles and partly replacing clinopyroxene.
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