Vermiculite is a natural, non-toxic mineral expansion under high temperature minerals. It is a relatively rare mineral, belonging to Portland. Its crystal structure is monoclinic, it looks like mica from the shape. Vermiculite have granite hydration. It generally with asbestos produced at the same time. Because the ability of ion exchange vermiculite, its soil nutrition has a great role in.2000 of the world total output of more than 500 thousand tons of vermiculite. The main producers are China, South Africa, Australia, Zimbabwe and the United States.
Vermiculite (Vermiculite), Ca (Mg), 0.3-0.45 (H2O), n{(Mg, Fe3, Al), 3[(Si, Al), 4O12] (OH), 2}The name of Vermiculite from Latin, with a "worm" and "worm trail shape". Vermiculite were heated to 200 DEG C to 300 suddenly will be along the c axis of the crystals to produce worm like peeling, which it acquired its name. Vermiculite is a layered structure containing magnesium aluminum water Portland secondary metamorphic minerals,The shape of raw ore is similar to mica, which is usually made up of black (gold) mica by hydrothermal alteration or weathering. Because of its heating and water loss, it is bent when expanding, and the shape is similar to that of leech, so it is called vermiculite
Vermiculite is a clay mineral with montmorillonite similar, layered silicate. Generally composed of biotite by hydrothermal alteration or weathering. It can sometimes appear to like coarse biotite (this is biotite vermiculite, sometimes false) have to be shaped. The fine soil vermiculite heated to 300 DEG C when it can be expanded 20 times and bent. This was a bit like a leech vermiculite (commonly known as the leech), so it has such a name. Brown, yellow, vermiculite is dark green, like oil sheen, heated grey. Vermiculite can be used as construction materials, adsorbent, fire insulation materials, mechanical lubricant, soil conditioner and so on, a wide range of uses.
