方解石(Calcite)

        方解石是一种碳酸钙矿物，天然碳酸钙中最常见的就是它。晶体通常为复三方偏三角面体或菱面体，集合体呈粒状、块状、钟乳状、鲕状等。方解石的颜色多变，有白、灰、黄、红、绿、黑等，莫氏硬度为 3，遇稀盐酸剧烈起泡，广泛应用于建筑、化工、冶金等领域。

Calcite is a calcium carbonate mineral, and it is the most common one among natural calcium carbonates. Its crystals are usually in the form of ditrigonal scalenohedron or rhombohedron, and the aggregates are in the shapes of granular, massive, stalactitic, oolitic, etc. The color of calcite varies greatly, including white, gray, yellow, red, green, black, etc. Its Mohs hardness is 3. When it comes into contact with dilute hydrochloric acid, it will bubble vigorously. It is widely used in fields such as construction, chemical engineering, and metallurgy.