bronzitite

bronzitite

[′brän·zə‚tīt]
(petrology)
A pyroxenite that is composed almost entirely of bronzite. Also known as bronzitfels.
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A-Hydrothermal Metasomatic deposits in carbonate and dolomitic rocks: Through this process mechanism, when hydrothermal solutions penetrate into the dolomitic rocks, because the ionic radius of calcium is about 36 % bigger than that of the Magnesium, these two elements therefore cannot replace one another isomorphically; however because the Iron ionic radius is not so much different from that of the Magnesium, a series of isomorphic minerals like Magnesite, Hontite, Bronzitite and etc.
Although chromite occurs in the Bushveld Complex as an accessory mineral in bronzitites and dunites and as inclusions in anorthosite, the most economically significant occurrences are pseudo-stratified layers of chromitite in the critical zone of the Bushveld Complex.