0
Want 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.
Rocks that contain dark silicate minerals and plagioclase feldspar have?
Intrusive crystal
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.
What are the silicates made of?
Silicate minerals are those composed of silicon and oxygen atoms. Some of these minerals are quartz, feldspar, mica and olivine.
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.
It is generally true that igneous rocks are composed of what type of mineral?
igneous rocks are composed of silicate minerals
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.
What are the charicteristics of igneous rocks?
Igneous rocks are nearly always composed of silicate minerals and have an interlocking crystalline structure. The size of the crystals depends on how quickly the rock has cooled. Igneous rocks that cool near or on the surface may also contain gas bubbles.
Rocks which contain a variety of minerals are examples of a?
Igneous Rocks
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.
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.
Rocks that contain dark silicate minerals and plagioclase feldspar have?
Intrusive crystal
How are igneous and sedimentary alike?
Both are composed of minerals. Some sedimentary rocks contain pieces of igneous rocks.
Explain how the silica content of molten materials affects the color of igneous rocks?
The majority of minerals associated with igneous rocks are silicates. It is the proportion of certain silicate minerals that affects the color of igneous rocks. Igneous rocks that are high in orthoclase feldspar, quartz, and muscovite mica will be lighter in color than igneous rocks that are higher in olivine, pyroxene, amphibole, and biotite mica.
How does silica from molten material affect the color of igneous rock?
The majority of minerals associated with igneous rocks are silicates. It is the proportion of certain silicate minerals that affects the color of igneous rocks. Igneous rocks that are high in orthoclase feldspar, quartz, and muscovite mica will be lighter in color than igneous rocks that are higher in olivine, pyroxene, amphibole, and biotite mica.
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.
What are the silicates made of?
Silicate minerals are those composed of silicon and oxygen atoms. Some of these minerals are quartz, feldspar, mica and olivine.
