FIELD: chemistry.
SUBSTANCE: invention relates to making artificial stone and minerals. The crude mixture contains rock crystal, soda, borax, saltpeter, ground bones over-burnt to white, cobalt carbonate, cryolite and crystal glass, with the following ratio of components, pts.wt: rock crystal - 26-30; soda - 2-3; borax - 6-8; saltpeter - 1-1.5; ground bones over-burnt to white - 1-1.5; cobalt carbonate - 0.1-0.3; cryolite- 1-1.5; crystal glass -.55.7-61.4.
EFFECT: low melting temperature of the crude mixture.
1 tbl
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