Chromitite - Wikipedia
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 - an overview | ScienceDirect Topics
Chromitite is a type of rock that contains more than 20% chromite, while rocks that contain between 5% and 20% chromite are called chromite-rich dunite. The main component of chromitite is olivine, with occasional presence of plagioclase and pyroxenes.
Chromite - Wikipedia
Chromite is a crystalline mineral composed primarily of iron (II) oxide and chromium (III) oxide compounds. It can be represented by the chemical formula of FeCr 2 O 4. It is an oxide mineral belonging to the spinel group.
Chromitite layers indicate the existence of large, long-lived, and ...
2022年3月8日 · In this study, we present field and microtextural data on chromitites from the Bushveld Complex whose formation require many times their own volume of magma to supply the key component,...
Chromite chemistry of a massive chromitite seam in the
2020年3月3日 · The UG-2E chromitite seam is intersected at a depth of 1584.88 to 1586.77 m (approx. 189-cm-thick); it is comprised of massive to semi-massive chromitite, disseminated chromite, and sections having chromitite stringers and chromitite patches (darker sections are areas with more massive chromitite).
Chromitites in ophiolites: How, where, when, why? Part II. The ...
2014年2月15日 · This review forms the basis for chromitite-genesis models that integrate new geochemical data with petrologic, field and microstructural observations, and for a re-interpretation of previous data and concepts.
Chromitite Definition & Meaning - Merriam-Webster
The meaning of CHROMITITE is a rock composed chiefly of the mineral chromite.
Origin of the UG2 chromitite layer, Bushveld Complex
2006年11月29日 · Chromitite layers are common in large mafic layered intrusions. A widely accepted hypothesis holds that the chromitites formed as a consequence of injection and mixing of a chemically relatively primitive magma into a chamber occupied by more evolved magma.
Chromite - an overview | ScienceDirect Topics
A chromitite is a rock consisting largely of chromite. Xieite and chenmongite are chromite polymorphs; both are orthorhombic and occur in meteorites as a result of shock-induced, high-pressure, high-temperature alteration of chromite.
Hydrothermal Chromitites from the Oman Ophiolite: The Role …
2020年2月28日 · We found small chromite concentrations (chromitites) in diopsidites, precipitated from high-temperature hydrothermal fluids, in the mantle to the crust of the Oman ophiolite. Here, we present petrologic characteristics of the hydrothermal chromitites to understand their genesis.