Is Granite Mafic Felsic Or Intermediate

Mafic felsic and intermediate intrusive rocks.

Is granite mafic felsic or intermediate.

Basalt is an extrusive mafic volcanic rock. Intermediate lava has a lower silica content than felsic lava but not as high magnesium or iron levels as found in mafic lava. Due to the color of the minerals forming them the rocks are either light or dark. Therefore rocks are divided into ultramafic mafic intermediate and felsic.

In igneous petrology an intermediate composition refers to the chemical composition of a rock that has 52 63 wt sio 2 being an intermediate between felsic and mafic compositions. Basalt andesite ultramafic granite. Mafic vs felsic mafic and felsic are categories into which igneous rocks are classified. And granite is.

Additionally felsic magmas may have very high gas contents. What type of magma forms at mid ocean ridges. The lava flow has a medium viscosity as well and once cooled the resulting rock is known as andesite. Part i volcanic extrusive rocks.

Felsic magmas are much more viscous than the intermediate magmas. Felsic intermediate mafic ultramafic. Felsic intermediate mafic which of the following properties increases in the direction of the arrows in the sentence above. Intermediate 1472 1832 degrees fahrenheit.

Intrusive rocks are classified the same way extrusive rocks are according to the relative amounts of feldspars quartz and ferromagnesian minerals. For example granite contains around 70 of silica. Granite is the name given to intrusive felsic rocks whereas rhyolite is the name given to extrusive felsic rocks. This is an order showing increased silica content.

Mafic rocks have between 45 and 55 of silica whereas felsic rocks have over 65 of silica the highest of all types. Typical intermediate rocks include andesite dacite and trachyandesite among volcanic rocks and diorite and granodiorite among plutonic rocks. All felsic rocks contain a high percentage of silica. Granite is a great example of felsic rocks and muscovite quartz and some feldspar are the best examples of felsic minerals.

It is commonly erupted as passive lava flows due to its low viscosity. Gabbro is a mafic rock and has the same chemistry and mineralogy as basalt. Rhyolite is not a mafic rock but a felsic rock high in silicates and similar to granite in composition.