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Typical Minerals Ca PLAGIOCLASE & MAFICS (pyroxene) about 50/50Amphibole often present Olivine - absent to trace |
Detail Description
In this detail we see the mixed pyroxene and light gray calcium-rich plagioclase. In a color/texture classification we expect gabbro to be a dark rock, but what is crucial is the presence of pyroxene, seen here as black, irregular fractured masses. |
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| Last Update: 9/29/00 | e-mail: (Fichtels@jmu.edu) |