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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.
Rhodolite is a varietal name for rose-pink to red mineral pyrope, a species in the garnet group. It was first described from Cowee Valley , Macon County , North Carolina . [ 2 ] The name is derived from the Greek "rhodon" for "rose-like", in common with other pink mineral types (such as rhodochrosite , rhodonite ).
Manganese carbonate occurs naturally as the mineral rhodochrosite but it is typically produced industrially. It is a pale pink, water-insoluble solid. Approximately 20,000 metric tonnes were produced in 2005. [3]
Rhodonite is a manganese inosilicate, with the formula (Mn, Fe, Mg, Ca)SiO 3, and member of the pyroxenoid group of minerals, crystallizing in the triclinic system. It commonly occurs as cleavable to compact masses with a rose-red color (its name comes from Ancient Greek ῥόδον (rhódon) 'rose'), often tending to brown due to surface oxidation.
Cancers associated with PFAS-contaminated water include oral cavity/pharynx, brain, thyroid, and endocrine. PFAS are a class of thousands of chemicals used in manufacturing and consumer goods.
Siderite is a mineral composed of iron(II) carbonate (FeCO 3).Its name comes from the Ancient Greek word σίδηρος (sídēros), meaning "iron".A valuable iron ore, it consists of 48% iron and lacks sulfur and phosphorus.
Rhodochrosite, Sweet Home Mine, Alma, Colorado; 5.2 × 4.2 × 2.3 cm Smithsonite, Silver Bill Mine, Dragoon Mts, Cochise County, Arizona; 4.8 × 4.1 × 2.4 cm. Calcite group: trigonal. Calcite CaCO 3; Gaspéite (Ni,Mg,Fe 2+)CO 3; Magnesite MgCO 3; Otavite CdCO 3; Rhodochrosite MnCO 3; Siderite FeCO 3; Smithsonite ZnCO 3; Spherocobaltite CoCO 3 ...
Dark-red and yellow shigaite on pink rhodochrosite. Shigaite occurs as hexagonal tabular crystals up to 2 cm (0.79 in) in size or as thin films and coatings. The mineral can be yellow, burnt orange, brown or black in color. [5] Shigaite occurs in metamorphosed deposits of manganese ore [5] and is the Mn 2+ analogue of motukoreaite. [6]