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Andesite is an Igneous Rock. It has small crystals because it cooled quickly d;D
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∙ 11y ago
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Andesite has small crystals because?
Andesite has small crystals because it cools quickly.
Are large crystals found in diorite?
diorite crystals are large and andesite crystals are small
Compare the mineral composition of diorite with the mineral composition of andesite?
Both andesite and diorite are igneous rocks with an intermediate color index. Diorite; however, is intrusive and phaneritic, whereas andesite is aphanitic and extrusive. Andesite is said to be the extrusive equivalent of diorite. Diorite is made up of plagioclase feldspar and ferromagnesian mineral crystals, mainly amphibole. Contrarily, andesite may resemble rhyolite, meaning it presents a need for microscopic examination to see its mineral crystals. The two have a composition of plagioclase feldspar and amphibole, but it is much more difficult to detect in andesite.
What is andesite?
Andesite is an extrusive igneous or volcanic rock with an intermediate composition, meaning it has moderate levels of silica, magnesium, iron, and sodium. Andesite porphyry is andesite that contains visible crystals, indicating that it had already begun to cool before erupting.
What are small crystals called?
Small crystals. :D
What is a black intrusive rock with small crystals?
Intrusive rock normally has visible crystals. Extrusive igneous rock has small crystals. A black extrusive igneous rock with small crystals could be basalt.
Is andesite sandstone?
No. Andesite is a volcanic rock.
Do igneous rocks have small crystals large crystals or no crystals?
It depends on the type of igneous rock. Intrusive igneous rocks such as granite have large crystals, extrusive igneous rocks may have small crystals as in basalt or no crystals as in pumice.
How old is andesite?
Andesite is not any age in particular. Some deposites of andesite may be hundreds of millions of years old. However, since andesite is volcanic, some andesite rocks may only be minutes old.
Is andesite a mineral?
No. Andesite is an extrusive igneous rock.
Does basalt have small crystals or big?
Since basalt is extrusive it cools quickly and forms small crystals.
Is Andesite an igneous?
Yes. Andesite is an extrusive igneous rock.
