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Although spathic (carbonate) iron ores, such as siderite, have been economically important for steel production, they are far from ideal as an ore. Their hydrothermal mineralisation tends to form them as small ore lenses, often following steeply dipping bedding planes. This makes them not amenable to opencast working, and increases the cost of working them by mining with horizontal stopes. As the individual ore bodies are small, it may also be necessary t Siderite is a member of calcite group minerals, which have a similar structure and form several solid-solution series. The miscibility of the calcite group members is limited though. Of the several possible members of the solid-solution series associated with siderite (FeCO 3), only the smithsonite (ZnCO 3), magnesite (MgCO 3) and rhodochrosite (MnCO 3) varieties are common. Siderite is a common mineral and is found worldwide in many different environments. Only the most noteworthy will be mentioned here. Classic Siderite occurrences in Europe include Neudorf in the Harz Mountains, Germany; and Panasqueira, Portugal. Calcite Group. Magnesite-Siderite Series, Rhodochrosite-Siderite Series, Siderite-Smithsonite Series. Crystals typically found as brown to tan rhombohedrons in clusters, faces often curved or composites; more often found as medium to dark brown massive fine-grained material or as massive crystalline material with exposed curved cleavage surfaces. Siderite is generally crystal granular or non-crystal dense block, globose and gel. Color is generally white or yellow white, brown or brown black after weathering etc.Siderite also can be turned into limonite caused by oxidation hydrolysis. As a kind of traditional mineral resources, Siderite (FeCO3) has long been used for smelting iron and steel. Siderite is a iron carbonate mineral found in sedimentary, shales, clays and bog deposits. Siderite also forms in hydrothermal deposits and in nepheline syenite pegamtites and forms a series with Rhodochrosite. Siderite becomes magnetic when heated (paramagnetic). Nov 01, 2012 As seen in Fig. 9, there are irregularly shaped particles coating on the surface of siderite mineral. Actually, they are agglomerated particles. In general, in a homogeneous nucleation process of preparing nano-Fe 3 O 4 and controlled reaction conditions, the products are mostly spherical with uniform particle size . (siderite/[siderite+chukanovite]) and peak intensity ratio of the major peaks of siderite and Minerals 2020,10,156 4 of 13 chukanovite ( d 104 [ 2θ = 32. 02 °] and d 2 11 [ 2θ = 33. 98 General Siderite Information : Chemical Formula: Fe++CO3 : Composition: Molecular Weight = 115.86 gm Iron 48.20 % Fe 62.01 % FeO: Carbon 10.37 % C 37.99 % CO 2: Oxygen 41.43 % O: 100.00 % 100.00 % = TOTAL OXIDE
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