Is Granite Felsic Intermediate Or Mafic

There is little or no quartz.

Is granite felsic intermediate or mafic.

Mafic rocks have about 50 percent silica and high amounts of iron magnesium and calcium and are dark in color. It is commonly erupted as passive lava flows due to its low viscosity. Due to the color of the minerals forming them the rocks are either light or dark. Part i volcanic extrusive rocks.

A common mafic rock is basalt. Additionally they contain somewhat more gas than do the mafic magmas but not quite as much as the felsic magmas see below. The most common felsic rock is granite which represents the purified end product of the earth s internal differentiation process. Intermediate rocks are roughly even mixtures of felsic minerals mainly plagioclase and mafic minerals mainly hornblende pyroxene and or biotite.

And peridotite is an ultramafic rock with an. Diorite is the name given to intrusive intermediate rocks whereas andesite is the name given to extrusive intermediate rocks. Intermediate magmas are somewhat more viscous than the mafic magmas. Granite is a great example of felsic rocks and muscovite quartz and some feldspar are the best examples of felsic minerals.

The term felsic describes igneous rocks that are relatively rich in the elements that form quartz and feldspar. Mafic vs felsic mafic and felsic are categories into which igneous rocks are classified. Mafic rocks have between 45 and 55 of silica whereas felsic rocks have over 65 of silica the highest of all types. Basalt is an extrusive mafic volcanic rock.

More general terms for these rocks are mafic felsic and intermediate. Granite is a felsic rock. Felsic intermediate mafic ultramafic. Felsic rocks are composed of high levels of magma silicate materials and rocks which are also rich in potassium oxygen silicon and sodium.

Whereas magma mixing occurs when two ascending bodies of magma join and mix together into a composition that is intermediate to the two original magmas. Which of the following is an aphanitic igneous rock. Therefore rocks are divided into ultramafic mafic intermediate and felsic. This is an order showing increased silica content.

All felsic rocks contain a high percentage of silica. Gabbro and basalt are mafic with an average silica content of 48 percent. It is important to note that there are many intermediate steps in the purification process and many intermediate magmas which are produced during the conversion from mafic to felsic. Gabbro is mafic obsidian is felsic granite is felsic andesite is intermediate.

Compilations of many rock analyses show that rhyolite and granite are felsic with an average silica content of about 72 percent. For example granite contains around 70 of silica.