n.1.(Min.) A variety of the mineral cyanite.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Robinson (1825) reported "rhaetizite" (an early synonym for white kyanite) as occurring at Kingsbridge in "yellowish white, crystalline masses, laminated, translucent or transparent." This description appears to have been taken essentially verbatim from Cleaveland (1822), who cites his source as the "Rev.