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A mineral consisting of both the chloride and the bromide of silver.

An iron-black mineral of metallic luster, occurring in small orthorhombic crystals, also massive. It contains sulphur, arsenic, copper, and often silver.

A mineral of the pyroxene group, orthorhombic in crystallization; often fibrous and massive; color grayish white or greenish. It is a silicate of magnesia with some iron. Bronzite is a ferriferous variety.

A mineral, commonly of a yellowish green (pistachio) color, occurring granular, massive, columnar, and in monoclinic crystals. It is a silicate of alumina, lime, and oxide of iron, or manganese.

A crystallized, transparent mineral of the Zeolite family. It is a hydrous silicate of alumina and lime.

lphate of magnesia having cathartic qualities; -- originally prepared by boiling down the mineral waters at Epsom, England, -- whence the name; afterwards prepared from sea water; but now from certain minerals, as from siliceous hydrate of magnesia.

A rare metallic element associated with several other rare elements in the mineral gadolinite from Ytterby in Sweden. Symbol Er. Atomic weight 165.9. Its salts are rose-colored and give characteristic spectra. Its sesquioxide is called erbia.

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

A rare mineral, containing chiefly niobium, titanium, thorium, and cerium. It was so called by Berzelius on account of the inability of chemical science, at the time of its discovery, to separate some of its constituents.

itten also Æthiops.] [Obs.] Ethiops martial (Old Chem.), black oxide of iron. -- Ethiops mineral (Old Chem.), black sulphide of mercury, obtained by triturating mercury with sulphur. -- Ethiops per se (Old Chem.), mercury in finely divided state, having the appearance of a dark powder, obtained by shaking it up or by…

A metallic mineral, a selenide of copper and silver; -- so called by Berzelius on account of its being found soon after the discovery of the metal selenium.

A mineral occurring in transparent emerald green crystals. It is hydrous arseniate of copper.

A mineral of a brownish red color and vitreous luster, consisting chiefly of the silicates of iron, zirconia, and lime.

a mineral, consisting chiefly of the silicate of bismuth, found at Freiberg; -- called also culytine.

A brownish black mineral with a metallic luster, found in Norway. It contains niobium, titanium, yttrium, and uranium, with some other metals.

o intensify or concentrate; as, to exalt the juices of bodies. With chemic art exalts the mineral powers. Pope.

One who examines; an examiner. Sir W. Scott.

An examiner. [R.] Sir T. Browne.

cause, the truth of a statement; to inquire or search into; to explore; as, to examine a mineral; to examine a ship to know whether she is seaworthy; to examine a proposition, theory, or question. Examine well your own thoughts. Chaucer. Examine their counsels and their cares. Shak.

The scaling off of a bone, a rock, or a mineral, etc.; the state of being exfoliated.