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rhodochrosite |
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rhodochrositeCarbonate mineral composed of manganese carbonate (MnCO3), a source of manganese for the ferromanganese alloys used in steel production. It is commonly found in ore veins formed at moderate temperatures, in high-temperature metamorphic deposits, and in sedimentary deposits. rhodochrosite [‚rōd·ə′krō‚sīt] (mineralogy) MnCO3A rose-red to pink or gray mineral form of manganese carbonate with hexagonal symmetry but occurring in massive or columnar form; isomorphous with calcite and siderite, has a hardness of 3.5-4 on Mohs scale, and a specific gravity of 3.7; a minor ore of manganese. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Manganese occurs primarily as rhodochrosite (MnCO3) and pyrolusite (MnO2) and can be readily upgraded to electrolytic manganese dioxide (EMD) which currently sells for US$2,000 per tonne in the North American market. Manganese occurs primarily as rhodochrosite (MnCO3) and pyrolusite (MnO2) and can be readily upgraded to electrolytic manganese dioxide (EMD) which currently sells for US$2,000 per tonne in the North American market. These veins locally contain significant concentrations of rhodochrosite and are associated with minor concentrations of pyrite, sphalerite, and galena mineralization both within the veins and in the adjacent host rocks. |
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