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more about greisen
greisen |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Greisen \Grei"sen\, n. (Min.) A crystalline rock consisting of quarts and mica, common in the tin regions of Cornwall and Saxony. From WordNet r 1.6 [wn]: greisen n : a granitic rock composed of quartz and mica
more about greisen