Granite Rock Color And Texture

It forms from the slow crystallization of magma below earth s surface.

Granite rock color and texture.

Some granite is the oldest known rock on earth. The thermal history of a granite how fast it cooled and how long it spent at different temperatures dictates the size of the mineral grains and thus the rock texture. A coarse grained and generally igneous rock of even texture and light color composed chiefly of quartz and feldspars. Strictly speaking granite is an.

It is classified as acid plutonic igneous rock and it commonly occurs in batholiths. A prime example is the cathedral peak granodiorite which has unusually large up to 3 inches long crystals of potassium feldspar that are thought to have formed through. Texture of a rock is the appearance of the rock and how one feels touching it. Granite ˈ ɡ r æ n ɪ t is a common type of felsic intrusive igneous rock that is granular and phaneritic in texture.

Textures of igneous rocks. Granites can be predominantly white pink or gray in color depending on their mineralogy the word granite comes from the latin granum a grain in reference to the coarse grained structure of such a completely crystalline rock. Crystallized at depth granite masses are exposed at the earth s surface. Granite is composed mainly of quartz and feldspar with minor amounts of mica amphiboles and other minerals this mineral composition usually gives granite a red pink gray or white color with dark mineral.

Granite is a light colored igneous rock with grains large enough to be visible with the unaided eye. It usually contains small quantities of mica or hornblende and sometimes minor accessory minerals. The texture of a rock provides a clue whether the magma cooled fast or slowly and where the rock was formed.