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白云石 - Wikipedia

白云石

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白云石化学成分为CaMg(CO3)2,晶体属三方晶系的碳酸盐矿物。白云石的晶体结构与方解石类似,晶形为菱面体,晶面常弯曲成马鞍状,聚片双晶常见,多呈块状、粒状集合体。纯白云石为白色,因含其他元素和杂质有时呈灰绿、灰黄、粉红等色,玻璃光泽。三组菱面体解理完全,性脆。摩氏硬度3.5-4,比重2.8-2.9。矿物粉末在冷稀盐酸中反应缓慢。

[编辑] 鉴定特征

以硬度稍大,在冷稀盐酸中反应缓慢等特征,可与相似的方解石相区别。

白云石是组成白云岩和白云质灰岩的主要矿物成分。白云石可用作冶金熔剂、耐火材料建筑材料和玻璃、陶瓷的配料。

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