Chromitite with bronzite phenocrysts from Stillwater Igneous Complex
Chromitite is an igneous cumulate rock composed mostly of the mineral chromite. It is found in layered intrusions such as the Bushveld Igneous Complex in South Africa, the Stillwater igneous complex in Montana and the Ring of Fire discovery in Ontario.
Chromitite typically forms as orthocumulate layered lenses in peridotite rocks, at times intergrown with other oxides such as magnetite and ilmenite, and silicates such as olivine, pyroxene, plagioclase feldspar (mainly anorthite), and garnet crystals. The chromium rich garnet uvarovite forms in interbedded layers with chromitite.
Chromitite is the main economic source for the mining of chromite and subsequent source of the metal chromium.
Chromitite is an igneous cumulate rock composed mostly of the mineral chromite. It is found in layered intrusions such as the Bushveld Igneous Complex...
studies of potential uranium deposits. The complex is well known for its chromitite reef deposits, particularly the Merensky reef and the UG-2 reef. It represents...
consisting of 90% chromite, forming the rare rock type chromitite (cf. chromite the mineral and chromitite, a rock containing chromite). The Stillwater Igneous...
thin layer of chromitite over top. In addition, there is commonly a layer overlying both composed of feldspathic pyroxenite. Chromitite layers occur commonly...
complex consists of ultramafic peridotites and pyroxenites with associated chromitite layers toward the base with more mafic norites, gabbros and anorthosites...
Complex of South Africa includes cumulate layers of the rare rock type, chromitite, composed of 90% chromite, Plutonism – Geological theory that Earth's...
peridotite member (Peridotite zone) consisting of alternating dunite, chromitite, harzburgite and bronzite pyroxenite. The upper third is massive, monotonous...
cumulate layers of wehrlite, olivine pyroxenite, harzburgite, and even chromitite (a cumulate rock consisting largely of chromite). Small layered intrusions...
Torres-Ruiz, Jose (1995). "Iridium, Rhodium, and Platinum Sulfides in Chromitites from the Ultramafic Massifs of Finero, Italy, and Ojen, Spain" (PDF)...
famous example being the Bushveld Complex in South Africa. Podiform Chromitites are found in ultramafic oceanic rocks resulting from complex magma mixing...
graben. It consists of peridotites, pyroxenites, norites and bands of chromitite. The oldest supracrustal rocks are the Sebakwian Group (3.5 Ga) exposed...
Complex of South Africa near Thabazimbi in Limpopo. The Thaba Mines proven chromitite reserves amount to 23.6 million tonnes of ore grading 43.6% chromium....
chromite composition above 50% reclassifies the rock as a peridotitic chromitite.) Other common accessory minerals include spinel, garnet, biotite, or...
Franklin, B. J.; Marshall, B. (1995). "Chemistry and mineralogy of podiform chromitite deposits, southern NSW, Australia: a guide to their origin and evolution"...
Chromitite (black) and anorthosite (light grey) layered igneous rocks in Critical Zone UG1 of the Bushveld Igneous Complex at the Mononono River outcrop...
harzburgites, olivine bronzitites and pyroxenites together with narrow layers of chromitite that constitute the bases of cyclic units and that are extensively mined...
according to the oxide mineral, for example magnetitite, ilmenitite or chromitite. Strictly speaking, these would be magnetite orthocumulate, ilmenite orthocumulate...
Feliciano Rodrigues. 2011. Alteration Mechanism of Chromite in Podiform Chromitites from two Metamorphosed Ophiolitic Complexes: Golyamo Kamenyane (Bulgaria)...
To the north of the bridge there are beautiful and fresh outcrops of chromitite bands and anorthosite. This phenomenon is clearly visible and the relation...
Stanley R. (June 2, 1992). "Os-isotope study of platinum-group minerals in chromitites in Alpine-type ultramafic intrusions and the associated placers in Borneo"...
South Africa. Exploration has focused on finding basal nickel sulfide and chromitite deposits, although that has proved fruitless as the lower zone is not...
harzburgite–lherzolite transition zone. In particular, the rock podiform chromitite bears chromite, which is one of the ore minerals of chromium. Particularly...
activity, erosion, or non-deposition. The alteration of mélange-hosted chromitites from Korydallos, Pindos ophiolite complex, Greece, also highlights the...
Wallerius (Vallerius) (1709–1785). Valleriite occurs in dunites and chromitites replacing chalcopyrite in Cyprus. In Phalaborwa, South Africa it occurs...
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