Granulite
A species of Metamorphic Scientific name : Granulite RockType : Metamorphic
Granulite, A species of Metamorphic
Scientific name: Granulite
RockType: Metamorphic
Content
Description People often ask General Info
Description
Granulite is a common metamorphic rock, formed at very high temperatures, that is primarily composed of quartz and feldspar and often contains many tiny (non-gem-quality) garnets. Variable in color and pattern, often displaying some banding, and taking a polish well, granulite is used decoratively for countertops or flooring.
Physical Properties
Colors
Black, Brown
Texture
NonFoliated
Chemical Properties
People often ask
General Info
Usage
Granulite is a popular choice for construction materials, as well as statues, monuments, and other artifacts. However, it may also been seen in work surfaces, such as laboratory bench tops due to its durable and chemically resistant nature. When ground, granulite is also used as an addition to soil to promote plant growth.
Composition
They are medium to coarse–grained and mainly composed of feldspars sometimes associated with quartz and anhydrous ferromagnesian minerals, with granoblastic texture and gneissose to massive structure.
Formation
Granulite form at crustal depths, typically during regional metamorphism at high thermal gradients of greater than 30 ℃/km. In continental crustal rocks, biotite may break down at high temperatures to form orthopyroxene + potassium feldspar + water, producing a granulite. Other possible minerals formed at dehydration melting conditions include sapphirine, spinel, sillimanite, and osumilite. Some assemblages such as sapphirine + quartz indicate very high temperatures of greater than 900 ℃. 
AI rock expert in your pocket
Scan QR code to download
