From Wikipedia, the free encyclopedia
Jump to: navigation, search

Ferrohortonolite is a mineral variety in the olivine series composed of 70% to 90% fayalite and 30% to 10% forsterite or Fe/(Fe+Mg) ratio of 0.7 to 0.9.[1] It is from the obsolete hortonolite terminology for the olivine series.[1]

It has been reported from Mount Gillies, Queensland, Australia; the Ilimaussaq complex of west Greenland; Pantelleria Island, Sicily; and from Choc village on Saint Lucia.[1]


  • U.S. Bureau of Mines (1996). Dictionary of Mining, Mineral, and Related Terms.