Sepiolite

Oxide	Analysis	Formula
MgO	24.88%	1.00
SiO2	55.65%	1.50
H2O	19.47%	n/a
Oxide Weight		130.44
Formula Weight		161.98

Notes

A fiberous magnesium silicate mineral. It can be found in nature as sedimentary or massive. Nontoxic and odorless.
Specific gravity: 2-2.3
Hardness: 2-2.5
Refractory: (melting point is 1500-1700 ℃)
Low thermal expansion.
Can be high in plasticity.
Dissolves in hydrochloric acid.
The chemistry here is theoretical, actual products have contamination of Fe₂O₃, Al₂O₃, CaO, etc.

Related Information

Links

Materials	Attapulgite
Materials	Palygorskite
Materials	Talc A source of MgO for ceramic glazes, a flux or thermal expansion additive in clay bodies, also used in the manufacture of cordierite.
Minerals	Attapulgite, Palygorskite Attapulgite is a magnesium aluminum silicate clay of very fine particle size. It is also known as Fu
Minerals	Sepiolite A clay mineral.

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