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Dolomite belongs to the tripartite crystal system of carbonate minerals, pure dolomite minerals appear white, such as when it contains iron components, it appears grey, weathered dolomite appears brown. Dolomite is divided into iron dolomite and mangan
Feldspar is one of the more common minerals. It is a common group of aluminosilicate rock-forming minerals containing calcium, sodium and potassium. Feldspar is found in up to 60 per cent of the Earth's crust and can occur in igneous, metamorphic,
Talc is a silicate mineral, it is a magnesium-rich mineral formed by hydrothermal alteration of minerals, talc often shows olivine, hornblende, tremolite, tenacious pyroxene and other mineral artefacts. Talc is very soft and has a slippery feel, and a
Fluorite ore, also known as fluorite, is the main source of elemental fluorine in industry, and is one of the world's 20 kinds of important non-metallic mineral raw materials, it is widely used in metallurgy, aluminium refining, glass, ceramics, ce
Plagioclase is a basal, shallow-forming intrusive rock, mostly showing dark grey and grey-black colours, mainly composed of pyroxene and basal feldspar, which is often altered to chlorite, hornblende and carbonate minerals, so that the plagioclase has
Molybdenum is a metal element that was discovered relatively recently. Molybdenum metal has the advantages of a high melting point, high strength, good corrosion resistance and good resistance to abrasion. With endogenous ores, molybdenite combines mai
Bentonite is also called porphyry, soapstone or bentonite, the main mineral component is montmorillonite, bentonite some physical and chemical properties are determined by montmorillonite. Bentonite can swell into a paste when water is added, so in gen
Coke is due to bituminous coal in the isolation of air conditions, heated to 950-1050 ℃, after drying, pyrolysis, melting, bonding, curing, contraction and other stages of the final product, the ignition temperature of 450-650 ℃, the porosity of 35
Platinum group metal elements are much more expensive than gold and silver, and are contained in the earth's crust in small quantities and are dispersed, with few concentrated deposits. Platinum group metals include platinum, palladium, rhodium, ir
Bituminous coal is a class of coal. This type of coal contains 75 to 90 per cent carbon and no free humic acids. Most of it is cohesive; the calorific value is high. Density is about 1.2-1.5. volatile matter is about 10-40 per cent. Relative density 1.
