What does "felsic" mean?


The term "felsic" is used in geology to refer to igneous rocks that are rich in elements that form quartz and feldspar, such as sodium, potassium, magma and oxygen. The term combines two words: "feldspar" and "silica." Felsic rocks are light in color, and a good example is granite.

Felsic rocks contain more than 75 percent felsic minerals, namely plagioclase, orthoclase and quartz. This is a requirement in order for a rock to be classified as a felsic. Rocks that have more than 90 percent felsic materials are referred to as leucocratic. Felsic minerals are rich in silicon, potassium, sodium and aluminum; they are commonly pink, white or light grey.

Q&A Related to "What does "felsic" mean?"
Felsic is igneous rocks consisting mainly of feldspars, feldspathoids, quartz, and other
A felsic intrusive rock is a a type of compressed granite. a good example would be the McTavish monument on mount royal in Montreal. Despite this felsic intrusive rock is not from
(fĕl'sĭk) adj. Containing a group of light-colored silicate minerals that occur in igneous rocks. [FEL(DSPAR) + S(ILICA) + -IC.]
Very viscous lavas trapping in much dissolved gas. Like opening a carbonated beverage, when magma with lots of volatiles reaches the surface, the gases come out of solution and expand
1 Additional Answer
Ask.com Answer for: felsic
(of rocks) consisting chiefly of feldspars, feldspathoids, quartz, and other light-colored minerals.
Source: Dictionary.com
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