Marcasite
Marcasite , noun
[French marcassite; compare Italian marcassita, Sp. marquesita, Portuguese marquezita; all from Arabic marqashītha.]
(Mineralogy) A sulphide of iron resembling pyrite or common iron pyrites in composition, but differing in form; white iron pyrites.
Collocations (1)
Golden marcasite , tin. [Obsolete]