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DIORITE   (detail)

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Typical Minerals
Na/Ca PLAGIOCLASE & MAFICS (amphibole)
about 50/50
Quartz - absent to trace
Detail Description
     In this detail we see the mixed amphibole and translucent, white sodium plagioclase although the black amphibole overwhelms the eye. But look carefully and you will still see lots of Na/Ca plagioclase.
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