cobalt bloom

Webster's Dictionary (GCIDE)

1.(Chem.) A colorless crystalline substance, C4H6.(OH)4, of a sweet, cooling taste, extracted from certain lichens, and obtained by the decomposition of erythrin; -- called also erythrol, erythroglucin, erythromannite, pseudorcin, cobalt bloom, and under the name phycite obtained from the alga Protococcus vulgaris. It is a tetrabasic alcohol, corresponding to glycol and glycerin.

2.(Min.) A rose-red mineral, crystallized and earthy, a hydrous arseniate of cobalt, known also as cobalt bloom; -- called also erythrin or erythrine. [1913 Webster]

1.(Chem.) A tough, lustrous, reddish white metal of the iron group, not easily fusible, and somewhat magnetic. Atomic weight 59.1. Symbol Co. [1913 Webster]

Note: It occurs in nature in combination with arsenic, sulphur, and oxygen, and is obtained from its ores, smaltite, cobaltite, asbolite, etc. Its oxide colors glass or any flux, as borax, a fine blue, and is used in the manufacture of smalt. It is frequently associated with nickel, and both are characteristic ingredients of meteoric iron. [1913 Webster]

2.A commercial name of a crude arsenic used as fly poison. [1913 Webster]

Cobalt bloom. Same as Erythrite.

Cobalt blue, a dark blue pigment consisting of some salt of cobalt, as the phosphate, ignited with alumina; -- called also cobalt ultramarine, and Thenard's blue.

Cobalt crust, earthy arseniate of cobalt.

Cobalt glance. (Min.) See Cobaltite.

Cobalt green, a pigment consisting essentially of the oxides of cobalt and zinc; -- called also Rinman's green.

Cobalt yellow (Chem.), a yellow crystalline powder, regarded as a double nitrite of cobalt and potassium. [1913 Webster]