Is Granite Felsic Intermediate Or Mafic

Intermediate rocks are roughly even mixtures of felsic minerals mainly plagioclase and mafic minerals mainly hornblende pyroxene and or biotite.

Is granite felsic intermediate or mafic.

Due to the color of the minerals forming them the rocks are either light or dark. Granite is a felsic rock. More general terms for these rocks are mafic felsic and intermediate. Mafic vs felsic mafic and felsic are categories into which igneous rocks are classified.

The most common felsic rock is granite which represents the purified end product of the earth s internal differentiation process. Granite is a great example of felsic rocks and muscovite quartz and some feldspar are the best examples of felsic minerals. 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. All felsic rocks contain a high percentage of silica.

Diorite is the name given to intrusive intermediate rocks whereas andesite is the name given to extrusive intermediate rocks. For example granite contains around 70 of silica. This is an order showing increased silica content. Gabbro and basalt are mafic with an average silica content of 48 percent.

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. Felsic intermediate mafic ultramafic. A common mafic rock is basalt.

Mafic rocks have about 50 percent silica and high amounts of iron magnesium and calcium and are dark in color. Syenite diorite and monzonite are intermediate with an average silica content of 59 percent. Intermediate magmas are somewhat more viscous than the mafic magmas. Additionally they contain somewhat more gas than do the mafic magmas but not quite as much as the felsic magmas see below.

The term felsic describes igneous rocks that are relatively rich in the elements that form quartz and feldspar. 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. Gabbro is mafic obsidian is felsic granite is felsic andesite is intermediate. Which of the following is an aphanitic igneous rock.

Felsic rocks are composed of high levels of magma silicate materials and rocks which are also rich in potassium oxygen silicon and sodium. Part i volcanic extrusive rocks. Felsic rocks are mostly feldspar especially k feldspar at least 10 quartz and less than 15 mafic minerals biotite hornblende. There is little or no quartz.

Mafic felsic and intermediate extrusive rocks. Therefore rocks are divided into ultramafic mafic intermediate and felsic.