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orthoclase |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Orthoclase \Or"tho*clase\, n. [Ortho- + Gr ? to break.] (Min.) Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other See {Feldspar}. From WordNet r 1.6 [wn]: orthoclase n : a white or colored monoclinic feldspar
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