Ashapura Chainaclay Company

Kutch, Gujarat

The carbonate mineral calcite is a calcium carbonate corresponding to the formula CaCO₃and is one of the most widely distributed minerals on the Earth's surface.

Calcite crystals are hexagonal-rhombohedral, though actual calcite rhombohedrons are rare as natural crystals. However, they show a remarkable variety of habit including acute to obtuse rhombohedrons, tabular forms, prisms, or various scalenohedrons.

At Ashapura China Clay, processed or refined calcite is available in white powder form, granule cum powder form, and in lumps form. The various grades and their applications are:

Talc is a metamorphic mineral resulting from the metamorphism of magnesian minerals such as pyroxene, amphibole, olivine and other similar minerals in the presence of carbon dioxide and water. This is known as talc carbonation and produces a suite of rocks known as talc carbonates.

It occurs as foliated to fibrous masses, its monoclinic crystals being so rare as to be almost unknown. It has a perfect basal cleavage, and the folia are non-elastic, although slightly flexible. It is sectile and very soft, with a hardness of 1 (Talc is the softest of the Mohs' scale of mineral hardness). It has a specific gravity of 2.52.8, a waxlike or pearly luster, and is translucent to opaque.

At Ashapura China Clay, talc is available in white powder form. The various grades and their applications are: