Is Granite Felsic Intermediate Or Mafic

Mafic felsic and intermediate extrusive rocks.

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. Gabbro is mafic obsidian is felsic granite is felsic andesite is intermediate. Which of the following is an aphanitic igneous rock. All felsic rocks contain a high percentage of silica.

Felsic rocks are composed of high levels of magma silicate materials and rocks which are also rich in potassium oxygen silicon and sodium. This is an order showing increased silica content. Gabbro and basalt are mafic with an average silica content of 48 percent. Basalt is an extrusive mafic volcanic rock.

Mafic rocks have about 50 percent silica and high amounts of iron magnesium and calcium and are dark in color. Diorite is the name given to intrusive intermediate rocks whereas andesite is the name given to extrusive intermediate rocks. Felsic intermediate mafic ultramafic. Part i volcanic extrusive rocks.

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. Compilations of many rock analyses show that rhyolite and granite are felsic with an average silica content of about 72 percent. More general terms for these rocks are mafic felsic and intermediate. Mafic rocks have between 45 and 55 of silica whereas felsic rocks have over 65 of silica the highest of all types.

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. The most common felsic rock is granite which represents the purified end product of the earth s internal differentiation process. And peridotite is an ultramafic rock with an. Due to the color of the minerals forming them the rocks are either light or dark.

A common mafic rock is basalt. Granite is a great example of felsic rocks and muscovite quartz and some feldspar are the best examples of felsic minerals. Mafic vs felsic mafic and felsic are categories into which igneous rocks are classified. For example granite contains around 70 of silica.

There is little or no quartz. The term felsic describes igneous rocks that are relatively rich in the elements that form quartz and feldspar. Additionally they contain somewhat more gas than do the mafic magmas but not quite as much as the felsic magmas see below. Felsic rocks are mostly feldspar especially k feldspar at least 10 quartz and less than 15 mafic minerals biotite hornblende.

Granite is a felsic rock. Syenite diorite and monzonite are intermediate with an average silica content of 59 percent.