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A magnesian variety of dolomite.

ct or tincture obtained from Aconitum napellus, used as a poison and medicinally. Winter aconite, a plant (Eranthis hyemalis) allied to the aconites.

A coal-black marble, usually emitting a fetid smell when rubbed; -- called also stinkstone and swinestone.

The green mineral characteristic of the greensand of the chalk and other formations. It is a hydrous silicate of iron and potash. See Greensand.

A hydrated arseniate of copper, occurring in obtuse pyramidal crystals of a sky-blue or verdigris-green color.

An earthy black oxide of copper, arising from the decomposition of other ores.

A mass of otoliths.

A native oxide of antimony occurring in masses of a yellow color.

Of the nature of aconite.

Of or pertaining to aconite.

An intensely poisonous alkaloid, extracted from aconite.

The poisonous herb aconite; also, an extract from it. Strong As aconitum or rash gunpowder. Shak.

East Indian name of a virulent poison extracted from Aconitum ferox or other species of aconite: also, the plant itself.

Helmet-shaped; -- applied to a corolla having a broad, helmet- shaped upper petal, as in aconite.

g the Indian turnip; -- called also dragon root. -- Green earth (Min.), a variety of glauconite, found in cavities in amygdaloid and other eruptive rock, and used as a pigment by artists; -- called also mountain green. -- Green ebony. (a) A south American tree (Jacaranda ovalifolia), having a greenish wood, used for…

A variety of sandstone, usually imperfectly consolidated, consisting largely of glauconite, a silicate of iron and potash of a green color, mixed with sand and a trace of phosphate of lime.

See Conite.

A plant of the genus Aconitum; aconite. See Aconite.

f many invertebrates; an ear stone. Collectively, the otoliths are called ear sand and otoconite.

An olive-green earth used as a pigment. See Glauconite.