What is mineral pumice? Another pumice in the market is called mineral pumice. This pumice stone is formed by volcanic mining and humans have no involvement in its construction. In our country, there are many volcanic mines that produce mineral pumice due to their activity. As we said, mineral pumice is included in the category of igneous volcanic rocks because it is a rock that is composed of silicon and there is a lot of porosity in it. What is industrial pumice? Industrial pumice or lika, as its name suggests, is created from the production and processing of materials in an industrial environment. This material is produced in industrial factories and is sold as expanded clay in some factories, the most famous of which is the Leica brand. This pumice is produced in this factory from the expansion of clay in rotary kilns with a temperature of more than 1200 degrees Celsius. Because it has a factory production, it is circular in shape. The outer surface of this pumice stone is rough and its inner part has a black and brown texture.