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Unexpanded Raw Perlite Ore is known to comprise silicone dioxide, iron oxide, magnesium oxide, calcium oxide, and potassium oxide. It appears as grey colored granules that can be processed to impart desired characteristics for making its suitable for specific uses. This ore is widely utilized for construction, agriculture, petrochemical, & pharmaceutical processes. Unexpanded Raw Perlite Ore is perfect to be used for making sandwiched-structured composite materials.