Granite

Granite ( / ˈɡrænɪt / GRAN-it) is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground.

Granite | Properties, Formation, Composition, Uses » …

What is granite? Granite is a type of intrusive igneous rock that is composed primarily of quartz, feldspar, and mica minerals. It is typically formed deep within the Earth's crust under high pressure and temperatures. What are the physical and chemical properties of granite?

Granite | Composition, Properties, Types, & Uses | Britannica

Granite, coarse- or medium-grained intrusive igneous rock that is rich in quartz and feldspar; it is the most common plutonic rock of the Earth's crust, forming by the cooling of magma (silicate melt) at depth. Learn more about the properties and uses of …

Granite: Igneous Rock

Granite is a light-colored igneous rock with grains large enough to be visible with the unaided eye. It forms from the slow crystallization of magma below Earth's surface. Granite is composed mainly of quartz and feldspar with …

Granite geology: how granite forms, minerals, and …

In This Article. 1 What is Granite? 2 Formation and Composition of Granite. 3 Types of Granite. 4 Classification of Granite. 5 Characteristics of Granite. 6 How to Identify Granite. 7...

A Geologist's Definitive Guide to Granite Rock | Geology Base

Name: Granite; Rock type: Igneous; Origin: Intrusive; Texture: Coarse-grained or phaneritic; Colors: Mostly gray, red, pink, or white, but may have shades of green, blue, yellow, brown, or black. Chemical composition: Felsic; Silica content: 70-77 wt. % Density: 2.63 to 2.75 g/cm 3 (164 -176 lbs. per cubic foot) Cooling history: Slow, deep ...

Granite: Identification, Characteristics, Pictures & More

Granite is an intrusive igneous rock composed primarily of feldspar, quartz, and smaller amounts of mica. It has a phaneritic texture, meaning its tightly interlocking crystals can be seen with the naked eye. It usually displays mottled colors of off-white, gray, pink, and black with no layering or banding.