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A mineral occuring in silky fibers of a lavender blue color. It is related to hornblende and is essentially a silicate of iron and soda; -- called also blue asbestus. A silicified form, in which the fibers penetrating quartz are changed to oxide of iron, is the yellow brown tiger-eye of the jewelers.…

ing. [Colloq.] The ladies were very blue and well informed. Thackeray. Blue asbestus. See Crocidolite. -- Blue black, of, or having, a very dark blue color, almost black. -- Blue blood. See under Blood. -- Blue buck (Zoöl.), a small South African antelope (Cephalophus pygmæus); also applied to a larger species (Ægoc…

See Crocidolite.

obtained in South Africa and much used for ornament. It is an altered form of the mineral crocidolite. See Crocidolite.