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Talc

Layered structure, its structural formula is (Mg6)[Si8]O20(OH)4, specific gravity is 2.6-2.8, colorless, transparent or white. The cleavage surface is pearly. Talc is generally massive, leaflike, fibrous or radial.
Characteristics

Lubricity, fire resistance, acid resistance, insulation

High melting point, chemically?inert, good hiding power

Soft, glossy

Good adsorption

Technical Specifications
Specs.(%)Grade SiO2 MgO CaO Fe2O3 Al2O3 L.O.I. Whiteness
A 60-62 ≥31 ≤1.10 ≤0.25 ≤0.60 ≤6.0 ≥90
B 58-61 ≥30 ≤1.40 ≤0.30 ≤1.50 ≤8.0 ≥86
C 58-61 ≥30 ≤1.80 ≤0.30 ≤1.50 ≤10.0 ≥85
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