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Formula: CaFe2O4
Oxide, marokite supergroup
Crystal System: Orthorhombic
Specific gravity: 4.404 calculated
Hardness: 5&~189;
Colour: Black
Environments
Harmunite is a relatively new mineral, approved in 2012.
Localities
At the type locality, Jebel Harmun, Quds Governorate, West Bank, Palestine,
srebrodolskite,
magnesioferrite and harmunite together form black porous
aggregates in the central part of pebbles of a
pseudo-conglomerate.
Larnite, fluorellestadite,
ye’elimite, fluormayenite,
gehlenite and ternesite are
the main associated minerals. Minor and accessory minerals are
magnesioferrite,
srebrodolskite-brownmillerite,
Si-bearing perovskite and baryte.
Vorlanite, nabimusaite,
shulamitite, vapnikite and
the potentially new mineral CaCu2S2, are noted rarely. Also present around black ore minerals
were the sulphates calciolangbeinite,
aphthitalite and thénardite
(AM 99.5.965-975).
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