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Would quartz or plagioclase be more likely to form a well shaped crystal in an igneous rock?
Wiki User
∙ 13y ago
A well-shaped crystal in an igneous rock needs room and time to grow. So, minerals with high melting points form well shaped crystals while ones with lower melting points don't because there isn't as much time for them to form. Quartz crystallizes at a lower temperature than plagioclase so plagioclase is more likely to form well-shaped crystals.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoIgneous rock with plagioclase crystals would display well formed plagioclase crystals, whether small or large. This is because plagioclase forms its crystal latticework before many other minerals solidify in a magma, giving it room to develop its euhedral form.
Wiki User
∙ 13y agoPlagioclase.
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Which igneous rock is composed of coarse grained crystals of quartz feldspar and mica?
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.
What are the six minerals that make up igneous rocks?
Olivine, Pyroxene, Amphibole, Biotite, Muscovite, Potassium Feldspar, Quartz, Plagioclase are the minerals that make up the Igneous Rocks!:)another one is mica
What is an unidentified light colored igneous rock that is made up of potassium feldspar and quartz what family of igneous rocks does the rock belong?
Granite is an igneous intrusive rock (crystallized at depth), with felsic composition (rich in silica and predominately quartz plus potassium-rich feldspar plus sodium-rich plagioclase) and phaneritic, subeuhedral texture.
What three mineral are most commonly found in the igneous rock granite?
Rocks are composed of minerals. Three minerals found in granite are quartz, feldspar and mica. They are present in granite in differing amounts so all granite doesn't look the same.
Is milky quartz a igneous metamorphic or igneous rock?
milky quartz is either metamorphic or igneous
Would quartz or plagioclase be more likely to form well-shaped crystal in an igneous rock?
Plagioclase.
What greyish igneous rock contains plagioclase feldspar and small amounts of quartz and olivene?
None, you don't get quartz and olivine in the same igneous rock.
How can someone identify quartz in an igneous rock from plagioclase?
quartz will have conchidal fracture...plagioclase will have 2 sets of cleavage near 90 degrees and some striations quartz will have conchidal fracture...plagioclase will have 2 sets of cleavage near 90 degrees and some striations
Where are quartz crystal located?
Mainly within igneous rocks. Granite for example.
Is a granite a rock or a mineral?
Granite is an igneous rock. It is commonly formed from the following minerals. Quartz, potassium and Plagioclase Feldspars and Biotite Mica.
Which igneous rock is composed of coarse grained crystals of quartz feldspar and mica?
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.
What are the six minerals that make up igneous rocks?
Olivine, Pyroxene, Amphibole, Biotite, Muscovite, Potassium Feldspar, Quartz, Plagioclase are the minerals that make up the Igneous Rocks!:)another one is mica
How is myrmekite formed?
Myrmekite commonly forms during cooling of granitic rocks. It is a texture produced by the intergrowth of quartz within a plagioclase crystal.
Is granite the same mineral as quartz?
The most abundant minerals in granite are potassium feldspar, plagioclase feldspar, and quartz; with differing amounts of muscovite, biotite, and hornblende-type amphiboles. The most abundant minerals in basalt are amphibole and pyroxene, sometimes plagioclase, feldspathoids, and/or olivine. In other words, no.
What is plagioclase feldspar with quartz and olivine?
Diorite
What rocks are felsic?
Felsic rock are igneous rocks that are rich of quartz, orthoclase and plagioclase minerals. Here is the list of felsic rocks: granites, rhyolites, aplites, and pegmatites.
What is an unidentified light colored igneous rock that is made up of potassium feldspar and quartz what family of igneous rocks does the rock belong?
Granite is an igneous intrusive rock (crystallized at depth), with felsic composition (rich in silica and predominately quartz plus potassium-rich feldspar plus sodium-rich plagioclase) and phaneritic, subeuhedral texture.
