Three Main Varieties of Granite

Granite is available in three main varieties – Biotite Granite, Hornblende Granite and Tourmaline Granite.

Biotite Granite
Biotite granite is one of the most widely used granite types for building purposes. It has a mineralogy that includes quartz, biotite, plagioclase, and K-feldspar as its major compositions. It is known to be the hardest variety among all granite types and is available in a huge variety of colours. It can be used indoors for flooring, as wall tiles, as kitchen worktops etc. or outdoors without compromising the stone.

Hornblende Granite
Hornblende granite, also known as “Syenitic granite”, contains hornblende, quartz, feldspar, and mica in its mineral composition. Crystalline in nature and usually grayish or flesh red in colour, hornblende granite is one of the darkest variety of granites known by man till now. This variety of granite is also known to be durable in all types of weathering and can be put to any indoor or outdoor construction use.

Tourmaline Granite
This variety of granite is composed of Tourmaline as its major component and is softest of all types. This variety of granite is rarely found as white or colorless variety but is available in wide spectrum of colors. Since this variety of granite is not that durable and hard as compared to the other varieties, it is ideal to be used in building areas with very less of traffic.

Talcose Granite

This variety of granite consists of talc, a whitish colour material with an unctuous feel along with the common ingredients of granite. Talcose granite is not ideal for use in any type of building purpose except for the decorative purposes.