Biotite Quartz Monzonite of Birch Creek
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| Left: Outcrop image of biotite quartz monzonite of Birch Creek. The marginal facies has a weak preferred orientation of biotite; the core facies lacks a fabric. | Right: Stained slabs of biotite quartz monzonite. Fine-grained sample on the left is marginal facies; coarse-grained sample on right is core facies. |
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