Basalts

Basalts are generally dark black in color. Since basalt is a durable and hard stone, it is used in ballast, crushed stone and sandblasting industry.

Basalt that does not contain free silica is used in the sandblasting industry. Basalt is a rock with a Mohs hardness of 6.5 and a density of 2.77 gr/cm3 and contains 45-50% SiO2. Basalt sand is used in the range of 0.5-1.6mm, 1.0-2.0mm and 1.5-2.7mm in blasting.

 

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