Kotda Black Granite Slabs

Stone known as "black granite" is usually gabbro which has a completely different chemical structure.

Mineral crystals show that it slowly cools down from the molten rock material which is formed under the surface of the earth and requires a long time.

They possess an interlocking crystalline texture but,unlike granites,they contain little or no quaetz or alkali feldspar.Instead,black granites are composed dominantly of intermediate to caclic palgioclase accompanied by one or more common dark rock-forming minearls such as puroxenes,hornblende,and biotite.