Formula: CaFe3+2O(PO4)2
Anhydrous phosphate
Crystal System: Orthorhombic
Specific gravity: 3.555 calculated
Hardness: 4
Streak: Orange
Colour: Saffron-red to pinkish red

Metamorphic environments

Crocobelonite is a new mineral, approved in 2020.


At the Halamish wadi, Hatrurim Basin, Tamar Regional Council, Southern District, Israel, crocobelonite was discovered in the pyrometamorphic complexes. Crocobelonite-bearing assemblages contain a series of anhydrous iron-nickel phosphates, hematite, diopside and anorthite, and barringerite, transjordanite, murashkoite, halamishite and negevite.
Crocobelonite forms submillimeter-sized aggregates of prismatic to acicular crystals of saffron-red to pinkish-red colour. It represents a novel type of phosphate mineral formed by oxidation of phosphide minerals at temperatures higher than 1000°C and near-atmospheric pressure (pyrolytic oxidation) (MM 108.10.1973-1983).

At the type locality, an Unnamed phosphorite quarry, Daba-Siwaqa complex, Transjordan Plateau, Amman Governorate, Jordan, crocobelonite occurs as irregular dense segregations up to 0.5 mm in diopside paralava and appears as nests and schlieren up to 30 cm in size situated in brown to red-coloured hornfels. Associated minerals include transjordanite, negevite, murashkoite, hematite, halamishite, diopside, barringerite and anorthite (Mindat).

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