Which concentrations of elements are found in felsic rock

Register Don't have an account? Edit source History Talk 0. The rock texture thus determines the basic name of a felsic rock. The original article was at Wikipedia:Felsic. The list of authors can be seen in the page history. Categories Mineral Groups Add category. Cancel Save. Fan Feed 1 Strike and dip 2 Diorite 3 Volcano. Universal Conquest Wiki. Granite pegmatite. It 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. Common felsic minerals include quartz, muscovite , orthoclase , and the sodium-rich plagioclase feldspars.

In terms of chemistry, felsic minerals and rocks are on the other end of the elemental spectrum from the mafic minerals and rocks. The term was used more broadly in older geologic literature. It is considered archaic now, as the terms "acidic" and "basic rock" were based on an incorrect idea, dating from the 19th century, that silicic acid was the chief form of silicon occurring in rocks.

The term "felsic" combines the words " fel dspar" and " si lica". The similarity of the term felsic to the German words Fels , meaning "rock", and felsig , meaning "rocky", is purely accidental, as feldspar is a borrowing from German Feldspat , which derives from German Feld , meaning "field". A felsic volcanic lithic fragment , as seen in a petrographic microscope.

Scale box is in millimeters. Template:Citation needed. Felsite is a petrologic field term used to refer to very fine-grained or aphanitic , light-colored volcanic rocks which might be later reclassified after a more detailed microscopic or chemical analysis.

The term felsic is a description of an ingeous rock's composition, not its texture or where it occurs.

Felsic rocks have a lower melting point than mafic rocks and felsic magma has a lower temperature. In other words, felsic magma is not hot enough to melt mafic rock while mafic magma is hot enough to melt felsic rock. Gabbro is a mafic rock magnesium and iron silicates while granite is a felsic rock referring to lighter elements such as potassium in feldspar.

Felsic rock contains fewer heavy elements than mafic rocks. The chemical equivalent to gabbro is basalt, as both are mainly pyroxene and plagioclase feldspar. The difference is that gabbro is intrusive rock and basalt is extrusive.

Granite is an intrusive felsic rock. It is an intrusive, felsic igneous rock. Basalt is a mafic rock. Mafic, felsic, and intermediate rocks can all have a porphyritic texture. When it cools and crystallizes into rock, the rock will be described as felsic igneous rock. Examples of felsic igneous rocks are granite, rhyolite, and pumice. Rhyolite is felsic. Andesite is intermediate and Basalt is mafic. Log in. See Answer. Best Answer. The elements are aluminium, potassium, silicon, oxygen, calcium and sodium.

Study guides. Q: What elements are found in a felsic rock? Write your answer Related questions. Which relative concentration of elements is found in a felsic rock? Are olivine and pyroxene most likely to be found in felsic rock? Is Felsic a Intrusive or Extrusive Rock? What pair of minerals is found in felsic rock? What are two examples of felsic rock?