A mafic rock is composed of mafic minerals such as biotite mica, amphibole, proxene, and olivine. The actual word mafic refers to magnesium and iron; nevertheless, these minerals are called ferromagnesian. Mafic rocks include gabbro, scoria, and basalt. They each have about 46-85% mafic mineral crystals. Periodite, 86-100% mafic minerals, is considered ultramafic because of its olivine composition.
Mafic is a chemical classification for igneous rocks containing 46-85% mafic (minerals rich in iron and magnesium) minerals. Some examples include gabbro, basalt, and scoria.
mafic rocks can be made up of orthoclase feldspar and quartz
These rocks are called mafic igneous rocks, such as basalt. == ==
Felsic refers to igneous rocks that are relatively high in silica and aluminum. Mafic refers to igneous rocks that are higher in magnesium and iron than felsic rocks.
Olivine is a mafic mineral. It is most abundant in ultramafic rocks.
First of all there is no such thing as a mafic or a felsic "mineral". There can be mafic and felsic rocks.Mafic rocks have a high magnesium and iron content.Felsic rocks enriched with lighter elements such as oxygen and silicon.
Felsic rocks have 0-15% mafic crystals, while mafic rocks have 46-85% mafic crystals.
mafic rocks can be made up of orthoclase feldspar and quartz
Santorini volcano has also and mafic rocks.
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.
These rocks are called mafic igneous rocks, such as basalt. == ==
are a mixture of both mafic and felsic rocks
Mafic rocks, such as those found in the oceanic crust, are more dense than the felsic rocks found in the continental crust.
Mafic rocks are denser than felsic rocks because they contain heavier compounds, minerals and other materials, they are ferromagnesian in composition.
Felsic refers to igneous rocks that are relatively high in silica and aluminum. Mafic refers to igneous rocks that are higher in magnesium and iron than felsic rocks.
Dark colored rocks.
greater proportion of silica
Granite and grandiorite are two felsic rocks but I'm seeing that some people cosider granite mafic.