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Originally Posted by BeccaPrice
What's that kind of rock that has mica chips in it, anyone know? (I hope it's not Gneiss - King Gneiss would just be too twee.)
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I think you are thinking of Schist. When I was in middle school and we studied geology for science class some of my classmates had a field day with the word as it sounds quite close to another word.
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Schist is a medium-grade metamorphic rock with medium to large grains of mica flakes in a preferred orientation (nearby mica flakes are roughly parallel)
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http://en.wikipedia.org/wiki/Schist