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DIORITE   (detail)

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Typical Minerals
PLAGIOCLASE & MAFICS (amphibole) about 50/50
Quartz - absent to trace
Detail Description
     In this detail we see the grayish and whiteish plagioclase, and some pale pink orthoclase. The mafics also stand out, but are more like 20% than the 50% which is more the norm. Also, little or no quartz can be seen here.

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Last Update: 9/29/00

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