"Mandlestone" is a word in ENGLISH

A variety of trap or basaltic rock, containing small cavities, occupied, wholly or in part, by nodules or geodes of …

Alt. of Amygdaloidal

Pertaining to, or having the nature of, the rock amygdaloid.

Almond-shaped.

A mineral of the Zeolite family, often occurring in amygdaloid, in foliated masses, and also in monoclinic crystals with pearly …

An old term rather loosely used to designate various dark-colored, heavy igneous rocks, including especially the feldspathic-augitic rocks, basalt, dolerite, …

A term now used to designate any one of a family of minerals, hydrous silicates of alumina, with lime, soda, …