What is felsic magma?

Felsic magma is the sort that's rich in feldspar and silica (quartz). As opposed to mafic magma, which is rich in magnesium and iron (Fe to chemists). Felsic magma used to be called 'acid'. It is pale grey or pinky-grey in colour. It derives from a melt of continental (rather than oceanic) crust. read more

Felsic magma is the sort that's rich in feldspar and silica (quartz). As opposed to mafic magma, which is rich in magnesium and iron (Fe to chemists). Felsic magma used to be called 'acid'. read more

Felsic refers to those rocks rich in silicate minerals, magma, and rocks which are enriched in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium. They are usually light in color and have specific gravities less than 3. The most common felsic rock is granite. read more

Trace-element modeling, major-element chemistry, and petrologic evidence indicate that the MBG and MPG may have formed through pulse injection of magmas produced by fractional crystallization from felsic magma chambers at depth, involving an assemblage of clinopyroxene, amphibole, plagioclase, K-feldspar, [+ or -] blotite, [+ or -] zircon, [+ or -] apatite. read more