White clay, white clay with means or sources of this type of soil has a faint color 2 the source of origin (Residual Deposits) are often found in white clay, this source is a mountain or Plains, which was originally a rock horse tooth mineral sources (Feldspar), horse tooth decay and break rock by dismissed the atmosphere (Weathering) final result remains as a white clay is that it is always found in clay dirt is there a chemical formula for silica SiO 2, also have a horse teeth and produces other stones that have not changed since the reaction is not yet complete, and there may be some dirt into the sedimentary basin contamination (Sedimentary Deposit) means white clay source.White clay from the first source is caused by water and cumulation blow away thukkrasae in the plains in the country, there are several sources of ground white Thailand province of prachin buri, Ranong, Surat Thani, uttaradit is Lampang, Nakhon SI thammarat, etc.
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