Earth India Minerals Madhapar, Bhuj, Gujarat

Silica sand is produced by crushing sand stone or quartzite of open texture, and washing and grading it to yield requisite grain distribution. Silica flour is produced by crushing grinding and washing the high grade quartz, quartzite rocks or from white silica sand.

Bentonite are very fine grained clays. They vary in color from cream to olive green. Bentonite shows conchoidal or subconchoidal fracture; can be easily cut with knife into thin shavings. It shows waxy luster on freshly cut surface and are soapy to feel. Bentonite is an important naturally occurring clay of great commercial importance. Based on water absorbing qualities in industry, Bentonite are know as swelling and non-swelling types.

Bauxite is the aluminium ore from which most aluminium is extracted. Bauxite rocks are typically classified according to their intended commercial application: metallurgical, abrasive, cement, chemical, and refractory.