alloclasite

English

Etymology

allo- (“different”) + Ancient Greek κλάω (kláō, “break”) + -ite, due to its cleavage pattern distinct from that of marcasite.

Noun

alloclasite (uncountable)

1. (mineralogy) A brittle monoclinic sulfosalt mineral of the arsenopyrite group.

Further reading

• David Barthelmy (1997–2025) “Alloclasite”, in Webmineral Mineralogy Database.
• “alloclasite”, in Mindat.org‎^[1], Hudson Institute of Mineralogy, 2000–2025.