Granite Rock Color And Texture

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

Granite rock color and texture.

Strictly speaking granite is an. Textures of igneous rocks. Granite also tends to have coarse intergrowths of feldspars and quartz that form a graphic texture. It usually contains small quantities of mica or hornblende and sometimes minor accessory minerals.

Granite is a light colored igneous rock with grains large enough to be visible with the unaided eye. 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. 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.

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. It is classified as acid plutonic igneous rock and it commonly occurs in batholiths. The size and shape of the mineral grains or crystals and the pattern of their arrangement give a texture to the rock. Crystallized at depth granite masses are exposed at the earth s surface.

It has colorless grains and it is mottled in white red pink grey or dark grains. Texture of a rock is the appearance of the rock and how one feels touching it. 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.