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Webster 1913 Edition

Noun.

[

Arsenic

pyrite

(Min.)

A mineral of a tin-white color and metallic luster, containing arsenic, sulphur, and iron; – also called

arsenical pyrites

and

mispickel

See also: arsenopyrite

Arsenopyrite n

See also: Arsenopyrite

arsenopyrite ‎(countable and uncountable, plural arsenopyrites)

(mineralogy) A silvery-grey ore of arsenic, a mixed arsenide and sulfide of iron, FeAsS.

a silvery-grey ore of arsenic