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What mineral composition is most characteristic of mafic rocks?
Wiki User
∙ 11y ago
olivine, pyroxene, and calcium-rich plagioclase
Wiki User
∙ 11y ago
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What mineral composition is most characteristic of felsic rocks?
felsic is orthoclase, quartz, and biotite. mafic is olivine, pyroxene, and calcium rich plagioclase. I am still researching intermediate.
Why are mafic rocks denser than felsic rocks?
Mafic rocks are denser than felsic rocks because they contain heavier compounds, minerals and other materials, they are ferromagnesian in composition.
What is the composition of the upper mantel?
the major composition is ultra-mafic rocks i.e. it contains rocks having higher proportion of iron and magnesium
What causes igneous rocks to get darker?
Chemical composition. Especially when Basic\Mafic.
How are igneous rocks classified acording to their..?
Igneous rocks are classified by either being intrusive or extrusive, then mafic or felsic then they are classified by either fine grain or course grained textures.
What mineral composition is most characteristic of felsic rocks?
felsic is orthoclase, quartz, and biotite. mafic is olivine, pyroxene, and calcium rich plagioclase. I am still researching intermediate.
What is the mafic mineral and felsic mineral?
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.
Definition for andesitic composition?
the composition of igneous rocks lying between felsic and mafic.
Why are mafic rocks denser than felsic rocks?
Mafic rocks are denser than felsic rocks because they contain heavier compounds, minerals and other materials, they are ferromagnesian in composition.
Is olivine mafic or felsic?
Olivine is a mafic mineral. It is most abundant in ultramafic rocks.
What are mafic rocks?
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.
What is the composition of the upper mantel?
the major composition is ultra-mafic rocks i.e. it contains rocks having higher proportion of iron and magnesium
What causes igneous rocks to get darker?
Chemical composition. Especially when Basic\Mafic.
Is coal mafic or felsic?
It is neither mafic or felsic, as these terms refer to the composition of igneous rocks, whereas coal is a sedimentary rock.
How are igneous rocks classified acording to their..?
Igneous rocks are classified by either being intrusive or extrusive, then mafic or felsic then they are classified by either fine grain or course grained textures.
What are mineral composition of rocks?
Mostly death
Is sandstone felsic or mafic?
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.
