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Roseo- :: Roseo- () A prefix (also used adjectively) signifying rose-red; specifically used to designate certain rose-red compounds (called roseo-cobaltic compounds) of cobalt with ammonia. Cf. Luteo-.

Roselite :: Roselite (n.) A hydrous arsenite of cobalt, occuring in small red crystals, allied to erythrite..

Erythrite :: Erythrite (n.) A rose-red mineral, crystallized and earthy, a hydrous arseniate of cobalt, known also as cobalt bloom; -- called also erythrin or erythrine..

Arsenic :: Arsenic (n.) One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray color and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356¡ Fahrenheit. It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenicum of

Cobaltic :: Cobaltic (a.) Pertaining to, derived from, or containing, cobalt; -- said especially of those compounds in which cobalt has higher valence; as, cobaltic oxide..

Smalt :: Smalt (v. t.) A deep blue pigment or coloring material used in various arts. It is a vitreous substance made of cobalt, potash, and calcined quartz fused, and reduced to a powder..

Smaltite :: Smaltite (n.) A tin-white or gray mineral of metallic luster. It is an arsenide of cobalt, nickel, and iron. Called also speiskobalt..

Xantho- :: Xantho- () A combining form from Gr. xanqo`s yellow; as in xanthocobaltic salts. Used also adjectively in chemistry.

Cobaltine :: Cobaltine (n.) Alt. of Cobaltit.

Cobalt :: Cobalt (n.) A tough, lustrous, reddish white metal of the iron group, not easily fusible, and somewhat magnetic. Atomic weight 59.1. Symbol Co..

Purpureo- :: Purpureo- () A combining form signifying of a purple or purple-red color. Specif. (Chem.), used in designating certain brilliant purple-red compounds of cobaltic chloride and ammonia, similar to the roseocobaltic compounds. See Cobaltic..

Linnaeite :: Linnaeite (n.) A mineral of pale steel-gray color and metallic luster, occurring in isometric crystals, and also massive. It is a sulphide of cobalt containing some nickel or copper..

Bloom :: Bloom (n.) A popular term for a bright-hued variety of some minerals; as, the rose-red cobalt bloom..

Kobalt :: Kobalt (n.) See Cobalt.

Pyrites :: Pyrites (n.) A name given to a number of metallic minerals, sulphides of iron, copper, cobalt, nickel, and tin, of a white or yellowish color..

Zaffer :: Zaffer (n.) A pigment obtained, usually by roasting cobalt glance with sand or quartz, as a dark earthy powder. It consists of crude cobalt oxide, or of an impure cobalt arseniate. It is used in porcelain painting, and in enameling pottery, to produce a blue color, and is often confounded with smalt, from which, however, it is distinct, as it contains no potash. The name is often loosely applied to mixtures of zaffer proper with silica, or oxides of iron, manganese, etc..

Erythrite :: Erythrite (n.) 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..

Praseo- :: Praseo- () A combining form signifying green; as, praseocobalt, a green variety of cobalt..

Slaggy :: Slaggy (a.) Of or pertaining to slag; resembling slag; as, slaggy cobalt..

Danaite :: Danaite (n.) A cobaltiferous variety of arsenopyrite.

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