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Texture:
Aphanitic -- small crystals, invisible without magnification
Porphyritic -- visible crystals amid a fine-grained groundmass
Phaneritic -- large visible crystals
Composition:
Felsic -- more than 65% silica
Intermediate -- between 55-65% silica
Mafic -- between 45-55% silica
Ultramafic -- less than 45% silica
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Intrusive igneous rock named after Roman god of underworld?
Pluton
Rock type of glasshouse mountains?
It is a form of igneous rock, named Granite
Can you give me a poem about igneous rocks?
There was a young fellow named Tim, Who had never learned how to swim, He fell off a Dock, Sunk like an igneous rock, And that was the end of him.
An oxyanion is named based on the amount of a metal in the ion?
No, it is named based on the number of oxygen atoms in the ion. Most common oxyanions do not contain any metals.
Which extrusive igneous rock was nick-named 'volcanic glass'?
Obsidian and Tachylite are extrusive felsic (high silica content > 69% SiO2) and mafic (low silica content < 52% SiO2) igneous rock types respectively. They are commonly known as volcanic glasses and form due to the rapid cooling of lava. This rapid cooling prevents mineral crystallisation from occurring and this accounts for their "glassy" (or more correctly their vitreous)A texture. A A vitreous material is an amorphous (i.e. non crystalline) solid material. Please see the related link.
What is rhyolitic composition?
It contains about 70% Silica(SiO2)Added:Rhyolite, a gost town town in South-Nevada, is named for rhyolite, an igneous rock composed of light-colored silicates, usually buff to pink and occasionally light gray. It belongs to the same rock class, felsic, as granite but is much less common.
Intrusive igneous rock named after Roman god of underworld?
Pluton
Rock type of glasshouse mountains?
It is a form of igneous rock, named Granite
Can you give me a poem about igneous rocks?
There was a young fellow named Tim, Who had never learned how to swim, He fell off a Dock, Sunk like an igneous rock, And that was the end of him.
What is the name of any body of igneous rock named for the Roman god of the underworld?
Plutonic rocks are named after Pluto, the ancient Roman god of the underworld
What is based on the the teachings of a man named mahavira?
was based on the teachings a man named Mahvira
Is the composition of a compound the same everywhere?
Yes: The characteristic named is part of the definition of a compound.
What is morning mood about?
The composition named "Morning Mood" by Edvard Grieg is about the rising of the sun in the early morning hours. It is a composition mostly played by alternating the flute and oboe.
What are all the rocks in the world?
All the named rocks are igneous, metamorphic, or sedimentary.
What US coin has a name not related to its value?
The nickel, named for the metal that makes up part of its composition.
Which pizza was based on il tricolore and who is it named after?
the Pizza Margherita, which was named after the Queen Margherita.
An oxyanion is named based on the amount of a metal in the ion?
No, it is named based on the number of oxygen atoms in the ion. Most common oxyanions do not contain any metals.
