How hard is the granite?

April 1, 2020. Black granite has super dirt resistance, acid resistance, abrasion resistance, compression resistance, insulation performance and mysterious elegant appearance is favored by people, today we introduce black granite, before this, let’s first understand what is granite, granite is said to be very hard, how hard it is, let’s have a look!

Granite is a tectonite formed by the rise of volcanic lava to the surface of the earth’s crust under the molten state of considerable pressure. The magma does not erupt from the earth, but slowly cools and solidifies underground. It is a plutonian acid igneous rock and belongs to igneous rock (igneous rock). Granite is mainly composed of quartz, feldspar and mica. The feldspar content is 40%~60%, the quartz content is 20%~40%, the color depends on the kind and amount of the composition. The rock is hard and dense.

There are many kinds of black granite, such as basalt, gabbro, diabase, pure black linen, etc. It is a natural stone with strong hardness and high durability. After polishing, it can be struck with a hammer or chisel to make a metallic jingle. Its price is reasonable, and now it is very popular.

Scroll to Top