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61.3.2 Quartz-biotite schist. CA Highway 4 near Lake Alpine, California. Quartz is white and biotite is black. Compare with photo of different orientation in 61.3.1. [Scale shows cm divisions.]
Image 128 of 156
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![61.3.2 Quartz-biotite schist. CA Highway 4 near Lake Alpine, California. Quartz is white and biotite is black. Compare with photo of different orientation in 61.3.1. [Scale shows cm divisions.]](../61.3.2.JPG)