Raw Vermiculite on Gardening, Building, Metallurgy, Packing

Vermiculite is a mineral with montmorillonite clay similar for the layered structure of silicates. Generally biotite weathering by hydrothermal alteration or become. It sometimes looks like coarse biotite occurs (this is the illusion of vermiculite and biotite), and sometimes have to be a soil-like subtle. The vermiculite is heated to 300 ºC, it can expand 20-fold and bend. This time, a bit like a leech vermiculite (commonly known as leech leech), so it has such a name. Vermiculite is generally brown, yellow, dark green, like oil sheen. Heated they become gray. Vermiculite can be used as building materials, absorbents, fire insulation materials, machinery lubricants, soil conditioner and so on.