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Wollastonite

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wollastonite [′wu̇l·ə·stə‚nīt]
(mineralogy)
CaSiO3A white to gray inosilicate mineral (a pyroxenoid) that crystallizes in the triclinic system in tabular crystals and has a pearly or silky luster on the cleavages; hardness is 5-5.5 on Mohs scale, and specific gravity is 2.85. Also known as tabular spar.
Wollastonite 

(named after the English scientist W. H. Wollaston, 1766-1828), also tabular spar, a silicate mineral with a chain structure and a circular radical. Its chemical formula is Ca3(Si3O9), and it sometimes contains traces of iron. Wollastonite crystallizes in a triclinic system, forming flat tabular crystals as well as radiated and conchoidal aggregates; its color is white and sometimes pink. It has a hardness of 5-5.5 on the mineralogical scale and a density of 2,780-2,920 kg/m3. Wollastonite is formed by contact and plutonic regional metamorphism of limestones.
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Mg- and Ca-rich silicates such as olivine, serpentine, talc and wollastonite are available worldwide and have the potential of sequestrating the total amount of C[O.
Mineral trapping of C[O.sub.2] via oil shale ash aqueous carbonation: ... by Uibu, M.; Kuusik, R. / Oil Shale
Wollastonite (calcium meta-silicate) for polyesters, nylon and other resins.
Fillers by Plastics Technology
com Our booth introduces new grades of VANSIL W wollastonite for high performance industrial, architectural, and texture paint, including VANCOTE treated wollastonite and our expanded VANTALC talc offerings.
Booth descriptions of ACS exhibitors by JCT CoatingsTech
 
 
 
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