Minerals which contain much magnesium and iron, like olivine and pyroxene.
No. The terms mafic and felsic apply to igneous rocks. Limestone is a sedimentary/biochemical rock and so cannot be said to be mafic, felsic, or intermediate.
felsic, intermediate, mafic, and ultramafic.
Igneous rocks get darker as a result of higher concentrations of dark minerals like mafic minerals (e.g., biotite, amphibole, pyroxene) and higher levels of iron and magnesium. These minerals are more abundant in mafic igneous rocks, leading to their darker coloration compared to felsic igneous rocks, which have lower levels of these dark minerals. Heat also plays a role in darkening certain minerals through processes like metamorphism.
Neither. The terms mafic and felsic apply to silicate igenous rocks. Coal is neither igneous nor is it composed of silicates. Coal is an organic sedimentary rock.
Biotite and muscovite micas, quartz, magnetite, olivine, amphiboles, and feldspars.
Felsic rocks are primarily composed of minerals like quartz, feldspar, and muscovite, while mafic rocks contain minerals such as olivine, pyroxene, and plagioclase. Felsic rocks have lighter-colored minerals and lower density compared to mafic rocks, which have darker-colored minerals and higher density.
Neither. The terms mafic and felsic refer to the composition of igneous rocks, which are dominated by silicate minerals. Marble is a metamorphic rock composed of carbonate minerals. The terms mafic and felsic do no apply to it.
Rock salt is neither felsic nor mafic. It is a type of sedimentary rock composed primarily of halite (or sodium chloride) minerals. Felsic and mafic are terms used to describe igneous rocks based on their silica content and mineral composition.
No, granite is not considered mafic. It is an igneous rock that is classified as felsic due to its high silica content and lower concentration of iron and magnesium minerals compared to mafic rocks like basalt.
Monzonite is an intermediate rock.
No. The terms mafic and felsic apply to igneous rocks. Limestone is a sedimentary/biochemical rock and so cannot be said to be mafic, felsic, or intermediate.
Geologists use the terms felsic and mafic to describe the compositions of igneous rocks. Felsic rocks are rich in silicon and aluminum, making them lighter in color and less dense. Mafic rocks are richer in magnesium and iron, making them darker in color and denser.
How are mafic and felsic igneous rocks different
felsic, intermediate, mafic, and ultramafic.
No. First of all, the terms mafic and felsic generally only apply to igneous rock. even among igneous rocks, mafic and felsic are just ranges on a "spectrum" of composition. Other classifications and examples include ultramafic (peridotite), intermediate (andesite), and intermediate-felsic (dacite).
Felsic minerals are Silicon-rich; whereas Mafic ones are low in Silicon, but contain Iron and Magnesium.
Igneous rocks can be either intrusive or extrusive, based on their location upon solidification from magma. Igneous rocks can also be grouped by chemistry and mineral content as felsic, intermediate, or mafic, mainly on the abundance of silicate minerals that are present.