0
What are Igneous rocks that contain many dark silicate minerals and that also are rich in magnesium and iron have a composition that is?
Wiki User
∙ 6y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is the silicate mineral that is found in the greatest variety of igneous rocks?
Quartz is one of the most abundant silicate minerals found in igneous rock.
Is magnesium an igneous rock?
No. Magnesium is not a rock; it is a metallic element. It is present in some of the minerals found in igneous rocks. It does not occur naturally in its elemental form.
Which minerals are not present in felsic type igneous rocks but are present in mafic type igneous rocks?
Minerals which contain much magnesium and iron, like olivine and pyroxene.
Are dark colored igneous rocks low in silicate minerals?
They are not low in silicate minerals. They are still primarily composed of them. However, the amount of silica in them is lower than in the lighter-colored rocks. The lightest igneous rocks (felsic) are at least 70% silica while the dark ones (mafic) are between 45% and 52% silica. Silica content below 45% is deemed ultramafic.
What is composition of acidic igneous rocks?
Acidic igneous rocks, also known as felsic rocks, are composed primarily of light-colored minerals such as quartz, feldspar, and mica. These rocks have a high silica content and typically have a lower iron and magnesium content compared to mafic rocks. Examples of acidic igneous rocks include granite and rhyolite.
Igneous rock that contains many dark silicate minerals and that also are rich in magnesium and iron have composition that is?
Basaltic Composition are Igneous rocks composed mostly of dark silicate minerals and plagioclase feldspar. Rich in elements of magnesium and iron. It is also known as mafic.
What type of composition does an igneous rock have that contains mostly plagioclase feldspar and about 30 percent dark silicate minerals?
Andesitic
Definitions for basaltic composition?
a compositional group of igneous rocks indicating that the rock contains substantial dark silicate minerals and calsiumrich plagioclase feldspar. a compositional group of igneous rocks indicating that the rock contains substantial dark silicate minerals and calsiumrich plagioclase feldspar.
A certain igneous rock contains about 25 percent dark silicate minerals The remainder of the rock is mostly plagioclase feldspar What type of composition does tthis igneous rock have?
ultramafic
What is the silicate mineral that is found in the greatest variety of igneous rocks?
Quartz is one of the most abundant silicate minerals found in igneous rock.
It is generally true that igneous rocks are composed of what type of mineral?
igneous rocks are composed of silicate minerals
How can mineral composition affect the color of an igneous rock?
Silicate minerals can be light or dark, but Mafic minerals are dark, which is why Basalt appears dark, while Granite is light because Quartz is also light (in colour, not density).
What is the name of the coloured silicate material found in igneous rocks and coarse granites?
They are silicate minerals like feldspars, micas, and olivine.
Is rock salt felsic or mafic?
Neither. The terms mafic and felsic refer to the composition of igneous rocks, which are dominated by silicate minerals. Rock salt is a sedimentary halide rock. Such terms do not apply to it.
Is magnesium an igneous rock?
No. Magnesium is not a rock; it is a metallic element. It is present in some of the minerals found in igneous rocks. It does not occur naturally in its elemental form.
What is the chemical composition of the Earth's crust?
The Earth's crust is formed mainly from the elements aluminum, silicon and oxygen in the form of silicates & aluminum oxides and occurring as silicate rocks.Silicate minerals are abundant in all three rock types (igneous, metamorphic, and sedimentary) comprising the crust, but the crust is composed mainly of silicate rich igneous rock. The continental crust is composed of the lighter 'felsic' igneous rock (granitic in nature), higher in aluminum, sodium, and potassium; the oceanic crust is composed of the heavier, darker, 'mafic' igneous rock (largely basalt) which is higher in iron and magnesium than the continental crust.Crust composition: Oxygen, Silicon, Aluminum, Iron, in that order.Overall composition of the entire Earth: Iron, Oxygen, Silicon, Aluminum, in that order.Magnesium and Iron
Would mineral content classify an igneous rock?
No -- it's a type of rock, often a composite. Primay types are igneous (made by fire -- vulcanism), sedimentary (sea beds) and composite (a mixture of other types). In almost every case, all of these types are defined as how the substance at hand was created and in most cases they are not pure minerals.
