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quartzite
Molecular formula : MW : CAS : nature : SiO₂ from quartz sandstone (quartz Sandstone) or cherts (silicolite) metamorphic (mainly by the regional metamorphism or thermal contact metamorphic) from the rocks. Main minerals quartz and a small amount of feldspar, sericite, chlorite, muscovite, etc.. With a small amount of Fe₂O₃, Al₂O₃, CaO and P₂O₅ other impurities.�?��呈灰白色、黄褐色等�? Tight massive.硬度7�?Higher refractoriness and better acid.在冶金工业中用作冶炼硅金属的熔剂，制酸�?耐火砖（硅砖）和冶炼铁�?硅的合金�?Is the glass industry and coking industry makeshift furnace materials.质纯的石英岩俗称硅石，是制�?石英玻璃，提炼结晶硅的主要原料�? The chemical industrial use silica manufacturing silicate.此�A，还是良好的研磨材料、建筑材料和陶瓷原料�? Notice:Each item can have many explanations from different angels. If you want grasp the item comprehensively,please see below "more details data".
Structure:
Please see below "More Detailed Data"
More Detailed Data:
1) quartzite 2) quartz 3) quartz 4) quartz 5) silicon dioxide
Notice	Some description was translated by software and the data is only as a reference.
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