Raw vermiculite is a natural, non-toxic mineral with a layered structure containing magnesium hydroaluminosilicate secondary metamorphic minerals. It is usually formed from black (gold) mica by hydrothermal alteration or weathering, and has unique thermal expansion characteristics.
Raw vermiculite has become an indispensable material for various industries due to its excellent performance and wide range of applications.
Raw vermiculite can be classified into Raw vermiculite and expanded vermiculite according to the stage.