geffroyite

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English[edit]

Etymology[edit]

Geffroyite was named in honor of Jaques Geffroy, a metallurgist for the French Atomic Energy Commission.

geffroy + -ite

Noun[edit]

geffroyite

  1. (mineralogy) An isometric-hexoctahedral bronze brown mineral containing copper, iron, selenium, silver, and sulfur.

References[edit]

  • David Barthelmy (1997–2024) “Geffroyite”, in Webmineral Mineralogy Database.