Cyanite n. (Written also kyanite) (Min.) A mineral occuring in thin-bladed crystals and crystalline aggregates, of a sky-blue color. It is a silicate of aluminium.
... beads with a small quantity of soda, but produce slags if too much soda is added: phenakite, pierosmine, olivine, cerite, cyanite, talc, gadolinite, lithium-tourmaline. ... — A System of Instruction in the Practical Use of the Blowpipe • Anonymous
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