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Silver iodide, a mineral of a yellowish color.

A suffix used in naming minerals; as, chlorite, from its characteristic green color; barite, from its heaviness; graphite, from its use in writing.

A steel-gray mineral, of metallic luster, commonly fibrous massive. It is a sulphide of antimony and lead, with a little iron.

Of or pertaining to the mineral jargon.

An ocher-yellow mineral occurring on minute rhombohedral crystals. It is a hydrous sulphate of iron and potash.

A fibrous mineral occurring in tufts of a straw-yellow color. It is a hydrous silicate of alumina and manganese.

A mineral of a brownish black color, related to titanite in form. It consists chiefly of silica, titanium dioxide, lime, and yttria.

) on which the kermes insect (Coccus ilicis) feeds. J. Smith (Dict. Econ. Plants). Kermes mineral. (a) (Old Chem.) An artificial amorphous trisulphide of antimony; -- so called on account of its red color. (b) (Med. Chem.) A compound of the trioxide and trisulphide of antimony, used in medicine. This substance occurs i…

An oil used for illuminating purposes, formerly obtained from the distillation of mineral wax, bituminous shale, etc., and hence called also coal oil. It is now produced in immense quantities, chiefly by the distillation and purification of petroleum. It consists chiefly of several hydrocarbons of the methane series.…

guished by leading or ruling characteristics; a principal division; a department; as, the mineral kingdom. "The animal and vegetable kingdoms." Locke. Animal kingdom. See under Animal. -- Kingdom of God. (a) The universe. (b) That spiritual realm of which God is the acknowledged sovereign. (c) The authority or dominio…

A mineral of a gray, red, brown, or green color, and glistening luster. It is a silicate of iron and manganese.

A blackish gray mineral, a sulphide of antimony, bismuth, and lead.

ale; a laying over another; -- said of thin plates or platelike substances, as of bone or minerals.

A mineral consisting of sulphate of lead, occurring either massive or in long slender prisms, of a greenish white or gray color.

element of the group of the earth metals, allied to aluminium. It occurs in certain rare minerals, as cerite, gadolinite, orthite, etc., and was so named from the difficulty of separating it from cerium, didymium, and other rare elements with which it is usually associated. Atomic weight 138.5. Symbol La. [Formerly wr…

An albuminous mineral of a rich blue color. Same as Lazuli, which see.

A mineral, of a white color and vitreous luster. It is a hydrous silicate of alumina and lime. Exposed to the air, it loses water, becomes opaque, and crumbles. [Written also laumonite.]

posed new metallic element. It is said to have been discovered in pyrites, and some other minerals, and to be of a silver-white color, and malleable.

A mineral of a fine azure-blue color, usually in small rounded masses. It is essentially a silicate of alumina, lime, and soda, with some sodium sulphide, is often marked by yellow spots or veins of sulphide of iron, and is much valued for ornamental work. Called also lapis lazuli, and Armenian stone.…

A mineral of a light indigo-blue color, occurring in small masses, or in monoclinic crystals; blue spar. It is a hydrous phosphate of alumina and magnesia.