Diabase: Diabase (also known as Fujian green, big lake green, bluestone), the composition is equivalent to the hypabyssal rock of gabbro. Crystalline, fine-medium, dark gray-grayish black, often with ophitic texture structure or sub- ophitic texture structure. Dark gray, grayish black. Diabase is mainly composed of pyroxene and basic feldspar (hypabyssal rocks with the same composition as gabbro), containing a small amount of olivine, biotite, quartz, apatite, magnetite, ilmenite and so on. Basic plagioclase is often altered into albite, zoisite, epidote and kaolinite, and pyroxene is transformed into chlorite, hornblende and carbonate minerals. The whole is often grayish green because of the color of chlorite. The composition of diabase is similar to that of gabbro, but it is formed shallowly, not as deep as gabbro, so its grain size is smaller, and it is not extruded from the surface like basalt and is mainly vitreous. According to the difference of secondary minerals, diabase can be divided into olivine diabase, quartz diabase, zeolite, syenite, etc., called alkaline diabase and so on.
Diabase material is a rare resource in mechanism sand field. with the lack of natural sand, a large number of artificial sand began to pour into the market. Diabase as a kind of artificial sand and gravel treatment, is widely used in sand and gravel stocking yard. Diabase sand making production line is equipped with the following: feeder-jaw crusher-impact crusher-vibrating screen-cone crusher-new sand making machine, or feeder-jaw crusher-impact crusher-vibrating screen-hydraulic cone crusher-new sand making machine-wheel sand washing machine, which is divided into two types: dry sand making and wet sand washing. The diabase sand making production line has the advantages of high degree of automation, low operating cost, high crushing rate, energy saving, large output, less pollution, simple maintenance, the produced machine-made sand meets the national construction sand standard, and the product has uniform particle size, good grain shape and reasonable gradation.
Diabase is a fine building material. For example, Guizhou's "Luodian Green", Zhejiang Linhai's "Malachite Green", Henan's "Wulongqing", "Chrysanthemum Green", Shanxi's "Taibaiqing" and "Beiyue Black" all fall into this category. Diabase is mainly used as crushed stone for asphalt concrete on highway, powder for chemical viscose, building stone or technological stone. It is the raw material of cast stone, the lining of all kinds of equipment and various types of parts such as joint, casing, grate and so on.
