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Which igneous rock is composed of coarse grained crystals of quartz feldspar and mica?
Wiki User
∙ 9y ago
Felsic igneous rocks (the lightest in color) are comprised mostly of quartz and potassium feldspar. Intermediate igneous rocks (somewhat darker than felsic) are made up of some quartz and potassium feldspar, but mostly plagioclase feldspar.
Wiki User
∙ 14y ago
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Which the following is a fine grained light colored extrusive igneous rock?
fine grained extrusive rocks can contain Potassium and Plagioclase Feldspar, Quartz, Biotite, Amphibole, Pyroxene and Olivine. these are all the choices for every igneous rocks
Is granite granite?
Granite is an intrusive igneous rock (formed from the slow cooling of magma underground), the major component of the continental crust, coarse grained, and composed of quartz along with a variety of feldspar minerals and micas.
What type of rock is hornblende diorite?
Hornblende diorite is a type of intrusive igneous rock. It is composed primarily of plagioclase feldspar, hornblende, and small amounts of other minerals. It has a medium to coarse-grained texture and is typically gray or greenish in color.
Igneous rocks that crystallize from magma and that are composed almost entirely of quartz and feldspar have a composition that is?
Granitic Composition
Why do igneous rocks that cool quickly have smooth and shiny textures?
because the magma does not have as much time for crystals to form inside the igneous rock therefor it is a fine-grained rock
Coarse grained igneous but not granite?
it it feldspar
What is coarse-grained igneous but not granite?
it it feldspar
Which is a coarse-grained igneous rock composed of mainly pyroxene plagioclase feldspar and olivine?
Gabbro.
What are the large crystals called in an igneous rock mostly composed of a finer grained matrix?
The larger crystals or masses of larger crystals are called phenocrysts.
What is the shape of granite?
Diorite is a speckled, coarse-grained igneous rock that is mainly composed of plagioclase, feldspar and hornblende. It is irregularly shaped, with randomly-oriented mineral crystals that form an interlocking texture.
What is an andesyte?
An andesyte is a class of fine-grained intermediate igneous rock, mostly containing plagioclase feldspar.
Where do coarse-grained igneous rocks form?
Coarse-grained igneous rocks are formed when magma cools slowly deep inside the Earth. Creating big crystals in them.
Which the following is a fine grained light colored extrusive igneous rock?
fine grained extrusive rocks can contain Potassium and Plagioclase Feldspar, Quartz, Biotite, Amphibole, Pyroxene and Olivine. these are all the choices for every igneous rocks
Is granite granite?
Granite is an intrusive igneous rock (formed from the slow cooling of magma underground), the major component of the continental crust, coarse grained, and composed of quartz along with a variety of feldspar minerals and micas.
Intrusive Igneous rocks are characterized by a coarse-grained texture because they contain?
Intrusive igneous rocks commonly have large mineral crystals.
Is metamorphic rock crystalline or composed of crystals?
Metamorphic, igneous, and sedimentary rock are all composed of crystals, which vary greatly in size.
What is a dark fine grained rock called?
They are rocks formed from lava at or near the surface. Basalt is a typical fine-grained extrusive igneous rock, composed of mineral crystals that require magnification to see. The fine-grained texture is due to rapid solidification of the lava which leaves little time for large mineral crystal formation.
