An ornamental stone consisting of a fine-grained, compact, translucent form of gypsum or (esp. with reference to ancient artefacts) calcite…

Originally: the bracket fungus Fomitopsis officinalis, which grows mainly on larch; a preparation of this, formerly used medicinally chiefly as a…

Alabaster; spec. oriental alabaster (onyx marble), used for artefacts in ancient times. Cf. alabastrite, n.

Alabaster, esp. that composed of gypsum; (also) calcitic alabaster (now historical; cf. alabastrites, n.).

= Iceland spar n. at sense 3b.

= moonmilk, n.

= moonmilk, n.

a transparent variety of calcite, showing strong double refraction.

Mineralogy. Slate-spar (Humble Dict. Geol.).

= moonmilk, n.

= slate-spar n.

Calcareous spar or rhombohedral crystallized carbonate of lime.

(See quots.)

A variety of calcite containing manganese.

Mineralogy. A mineral containing barium, now regarded as a variety of calcite. Now historical and rare.

An Indian variety of calcite coloured green by the presence of glauconite.

A variety of carbonate of lime or calcite.

‘A variety of calcite, occurring in pseudomorphous crystals, the original mineral being still in doubt’ (A. H. Chester Dict. Names Minerals 1896).

A soft whitish deposit of carbonate minerals found on the walls of limestone caves as a floury powder or porous mass; esp. such a deposit…

A relatively rare, metastable form of calcium carbonate, CaCO3, that is polymorphous with calcite and aragonite and crystallizes in the hexagonal…

Microcrystalline calcite present as a matrix material or an interstitial constituent in some kinds of limestone; a limestone consisting chiefly of…