What is (a) Graphic granite. See under Granite. (b) More generally, a coarse granite occurring as vein material in other rocks called?
pegmatite — (a) Graphic granite. See under Granite. (b) More generally, a coarse granite occurring as vein material in other rocks. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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