What is "hoelite"

n. (context mineral English) A monoclinic-prismatic mineral containing carbon, hydrogen, and oxygen.

Hoelite is a mineral, discovered in 1922 at Mt. Pyramide, Spitsbergen, Norway and named after Norwegian geologist Adolf Hoel (1879–1964). Its chemical formula is CHO ( 9,10-anthraquinone).

It is a very rare organic mineral which occurs in coal fire environments in association with sal ammoniac and native sulfur.