uralite
nounThe name given by G. Rose to a mineral which has the crystalline form of augite, but the physical properties and especially the cleavage and specific gravity of hornblende.
nounThe trade-name of a fire-proof building material, said to be made from disintegrated asbestos fiber with admixture of silicate of soda, carbonate of soda, chalk, mineral pigments, and glue, pressed into molded forms, dried, and baked. It is intended to replace wood where incombustibility is important, and in this capacity has been to some extent used in the internal fittings of ships of war.
nounAmphibole resulting from the alternation of pyroxene by paramorphism. It is not uncommon in massive eruptive rocks.
nouna dark green variety of