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A. is a natural fibrous mineral substance B. is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) C. contains iron oxide and alumina
Posted by Civil Engineer
Asked on June 8, 2016 1:25 pm
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A. is a natural fibrous mineral substance B. is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3) C. contains iron oxide and alumina

Posted by Neelmani
Answered on June 9, 2016 2:54 pm