Dolomite crystals of trigonal system 1 carbonate minerals. Chemical composition of CaMgCO32. Often with like iron, manganese and other qualitative generation of dolomite for magnesium. When the iron or manganese atomic number more than magnesium, called manganese iron dolomite or dolomite. Trigonal system, crystal rhombohedron, crystal bending into the saddle, often together piece of twin common. Aggregate usually assumes the granular. Pure white; Iron when it is gray; After weathering are brown. Glass luster. Slow bubbles in case of cold dilute hydrochloric acid. Is the main mineral composition of dolomite. Marine sedimentary origin of dolomite with siderite, lime rock into each layer output. In the lacustrine sediments, dolomite, anhydrite and rock salt and gypsum, sylvine symbiosis, etc.
Glass luster. Rhombohedron cleaves completely. Mohs hardness 3.5 ~ 4. The proportion of 2.85 ~ 3.2. Slow bubbles in case of cold dilute hydrochloric acid. Is the main mineral composition of dolomite. Marine sedimentary origin of dolomite with siderite, lime rock into each layer output. In the lacustrine sediments, dolomite, anhydrite and rock salt and gypsum, sylvine symbiosis, etc. Hydrothermal crystallization can be directly in the formation of dolomite, can also be used by magnesium replacement of limestone and dolomitic limestone and hydrothermal solution. Mainly used as basic refractory and blast furnace ironmaking flux; Preparing calcium-magnesia phosphate fertilizer production and magnesium sulfate; As well as the production of glass and ceramics ingredients.
No comments:
Post a Comment