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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 difference between rice crispy treat and sedimentary rock?
The difference between a rice crispy treat and sedimentary rock is that you can enjoy eating the treat than having to chew on some dirt and rock. Put that in your juice box and Suck It!
What is the difference between the two types of metamorphic rocks?
how is metamorphic rock different than intrusive rock
What the difference between sandstone and tuff?
Sandstone is a sedimentary rock formed when sand weathered from preexisting rock is cemented together. Tuff is an igneous rock formed from volcanic ash.
What intrusive igneous rock is composed of 18 percent olvine 48 percent pyroxene and 34 percent plagioclase?
Gabbro is made of these minerals. The proportions can vary.
What is an adamellite?
An adamellite is another word for a monzonite, a form of intrusive igneous rock composed mostly of plagioclase and orthoclase.
What is the difference between diabase and diorite?
Diabase is a mafic, fine-grained igneous rock composed mostly of plagioclase feldspar and pyroxene. Diorite is also an igneous rock, but it is intermediate in composition between mafic and felsic, consisting mainly of plagioclase feldspar and amphibole. The main difference lies in their mineral compositions, with diabase containing more pyroxene and diorite containing more amphibole.
What type of rock is a plagioclase?
Plagioclase is not actually a rock, but a member of the feldspar family of minerals, and a major rock forming silicate mineral.
Which mineral can be found in granite andesite gneiss and hornfels?
The mineral found in granite, andesite, gneiss, and hornfels is feldspar. It is a common mineral in these rock types and can exist in different varieties such as orthoclase, plagioclase, or potassium feldspar.
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.
What are the two main feldspar groups?
The two main feldspar groups are potassium feldspar (orthoclase and microcline) and plagioclase feldspar (albite and anorthite). They are common rock-forming minerals in the Earth's crust and are essential components in many igneous and metamorphic rocks.
Would quartz or plagioclase be more likely to form well-shaped crystal in an igneous rock?
Plagioclase.
What is the difference between red granite and granite?
The composition changes the appearance and colour of the granite. A granite that appears more red in colour will have more of the mineral orthoclase feldspar, whereas the lighter and more white in appearance will have less orthoclase and maybe more plagioclase feldspar and quartz in the composition.
What kind of rock is granodionite?
Granodiorite is a coarse-grained intrusive igneous rock that is similar to granite but contains more plagioclase feldspar than orthoclase feldspar. It typically has a salt-and-pepper appearance due to the mixture of light and dark minerals. Granodiorite forms from the slow cooling of magma deep within the Earth's crust.
What is some chemical formula for orthoclase rock?
KAlSi3O8 and NaAlSi3O8
What is the difference between gabbro and basalt?
Gabbro is a coarse-grained, intrusive igneous rock composed mainly of calcium-rich plagioclase feldspar, pyroxene, and sometimes olivine. Basalt, on the other hand, is a fine-grained, extrusive igneous rock composed mainly of plagioclase feldspar and pyroxene. Basalt is typically found on the Earth's surface, while gabbro is usually found beneath the surface as intrusive rock formations.
Where is the mineral orthoclase found?
The mineral orthoclase is found all over the world. It can also be found in Granite rock. It would be the pink or white crystals in it.
