In geology, felsic is a modifier describing igneous rocks that are relatively rich in elements that form feldspar and quartz. It is contrasted with mafic rocks, which are relatively richer in magnesium and iron. Felsic refers to silicate minerals, magma, and rocks which are enriched in the lighter elements such as silicon, … See more In modern usage, the term acid rock, although sometimes used as a synonym, normally now refers specifically to a high-silica-content (greater than 63% SiO2 by weight) volcanic rock, such as rhyolite. Older, broader … See more In order for a rock to be classified as felsic, it generally needs to contain more than 75% felsic minerals (namely quartz, orthoclase See more • QAPF diagram • List of minerals • List of rock types • Bowen's reaction series See more WebJan 11, 2024 · Igneous rocks are classified by composition and texture. The composition can be felsic, intermediate, mafic, or ultramafic. The composition depends on the minerals the rock includes. A felsic rock …
HA 730-G Piedmont and Blue Ridge aquifers text - USGS
WebOct 25, 2024 · Granite is the most common type of intrusive rock in continental crust and is by far the most-well known type of intrusive rock. Granite makes up the bulk of most … Web8 rows · Granite is a course-crystalline felsic intrusive rock. The presence of quartz is a good ... crypto and nft games
Granite - Wikipedia
WebFelsic rock synonyms, Felsic rock pronunciation, Felsic rock translation, English dictionary definition of Felsic rock. adj. Relating to or containing a group of light-colored … WebGranite (/ ˈ ɡ r æ n ɪ t /) is a coarse-grained intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase.It forms from magma with a high content of silica and alkali metal oxides that slowly … WebAs has already been described, igneous rocks are classified into four categories, based on either their chemistry or their mineral composition: felsic, intermediate, mafic, and … duracoat mixing instructions