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Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO 3. In its pure form (rare), it is typically a rose-red colour, [ 5 ] but it can also be shades of pink to pale brown. It streaks white, [ 6 ] and its Mohs hardness varies between 3.5 and 4.5.
Tetrahedrite gets its name from the distinctive tetrahedron shaped cubic crystals. The mineral usually occurs in massive form, it is a steel gray to black metallic mineral with Mohs hardness of 3.5 to 4 and specific gravity of 4.6 to 5.2. Tetrahedrite occurs in low to moderate temperature hydrothermal veins and in some contact metamorphic deposits
Sweet Home Rhodochrosite, Royal Ontario Museum "Alma King", the largest known rhodochrosite crystal, from the Sweet Home Mine. It measures 14 cm x 16.5 cm. [1] Sweet Home Mine is a mine near Alma, Colorado, United States. It was founded in 1873 as a silver mine. [2]
The most important economic minerals are tennantite‐tetrahedrite (containing most of the silver), sphalerite, galena, and chalcopyrite. Silver is also found in pyrargyrite, proustite, polybasite, and pearceite. In the central copper core of the Huarón deposit, enargite occurs. [4] Main gangue minerals are pyrite, quartz, rhodochrosite, and ...
This list includes those recognised minerals beginning with the letter R.The International Mineralogical Association is the international group that recognises new minerals and new mineral names; however, minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date.
[3]: 12 The main gangue minerals are quartz, fluorite, rhodochrosite, and calcite. [3]: 12 Other features of the Chumalu deposit include crustiform banding, breccia formation, vuggy textures, and the presence of "pyrite, sphalerite, galena, tetrahedrite, chalcopyrite, minor arsenopyrite, and abundant zinc-manganese-iron carbonate minerals".
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It commonly occurs with galena, tetrahedrite, sphalerite, chalcopyrite, pyrite, stibnite, zinkenite, siderite, quartz, rhodochrosite, dolomite and barite. [2] It was first described for an occurrence in Wheal Boys in the parish of St Endellion in Cornwall, [7] it was found associated with jamesonite, sphalerite and siderite. [6]
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