Chemical composition silica 64%, 31%, and 5% magnesium water.Mica-like-structure T-O-T layer structure on strength between layers is strong van doewan. Cause shifts of classes easily.
The chemical composition of 64% silica, magnesium, 31% and 5% of mica-like-structure constant tension between the top layer TOT is the van der valve. Cause the postponement of the floor easily.
Chemical composition of silica 64%, magnesium 31% and water 5% mica-like-structure structure layer is T-O-T strength difference between I'm strong vanderwaal. Cause to move me easily.