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62.1 Quartz-plagioclase-glaucophane gneiss. Austin Creek, California. Bluish-black glaucophane dominates dark bands, whereas white plagioclase and gray quartz dominate the light-colored bands. [Scale shows cm divisions.]
Image 136 of 156
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![62.1 Quartz-plagioclase-glaucophane gneiss. Austin Creek, California. Bluish-black glaucophane dominates dark bands, whereas white plagioclase and gray quartz dominate the light-colored bands. [Scale shows cm divisions.]](../62.1.JPG)