marcasite

(mär′kə sīt′)

noun

an orthorhombic mineral, FeS, that is dimorphic with pyrite; iron sulfide
this mineral cut and mounted on silver or other white metal to look like brilliants

Origin: Fr marcassite < ML marcasita < Ar marqashītā < Pers marqashīshā

See marcasite in American Heritage Dictionary 4

noun

A mineral with the same composition as pyrite, FeS₂, but differing in crystal structure. Also called white iron pyrites.
An ornament of pyrite, polished steel, or white metal.

Origin:

Origin: Middle English

Origin: , from Medieval Latin marcasīta

Origin: , from Arabic marqašīīā

Origin: , from Aramaic marqəšitā

Origin: , from Akkadian marḫašu

Origin: , from marḫaši, ancient region in the eastern Iranian plateau

Related Forms: