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Typical Minerals PLAGIOCLASE & MAFICS (amphibole) about 50/50Quartz - 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 | e-mail: (Fichtels@jmu.edu) |