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61.5 Hornblende schist. Mitchell County, North Carolina. Black acicular hornblende with minor white plagioclase, gray quartz, and green epidote (upper left) comprise the rock. [Scale shows cm divisions.]
61.5 Hornblende schist. Mitchell County, North Carolina. Black acicular hornblende with minor white plagioclase, gray quartz, and green epidote (upper left) comprise the rock. [Scale shows cm divisions.]

Image 130 of 156

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