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Andesite is a moderate weight volcanic rock, first described from the Andes.

It is the volcanic (extrusive) equivalent in composition to diorite of the plutonic rocks. It will be found in granite areas.

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Where does andesite form?

Andesite is an extrusive igneous rock found on or near volcanoes that contain intermediate magmas.


Does Andesite contain CaCO3?

No. Calcium carbonate is found in sedimentary and metamorphic rocks. Igneous rocks such as andesite are composed almost entirely of silicates.


Where do you find andesite?

Andesite is commonly found in volcanic areas where it forms from the cooling of lava flows. It can also be found in areas where ancient volcanic activity occurred, and is sometimes used as a building material for its durability and attractive appearance.


Identify three minerals that are normally found with quartz in samples of andesite rock?

Three minerals commonly found with quartz in andesite rock are feldspar (specifically plagioclase), biotite mica, and amphibole (such as hornblende). These minerals are all typically present in andesite as part of the overall composition of the rock.


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.


Is andesite sandstone?

No. Andesite is a volcanic rock.


Is andesite a mineral?

No. Andesite is an extrusive igneous rock.


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 plutonic?

No. It is volcanic. The plutonic equivalent of andesite is diorite.


Is Andesite an igneous?

Yes. Andesite is an extrusive igneous rock.


What is andesite?

Andesite is a type of igneous rock that is typically light to dark gray in color. It forms when magma from the Earth's mantle solidifies and cools relatively quickly. Andesite is commonly found in volcanic regions such as the Andes Mountains in South America.


Is andesite an extrusive rock?

Yes. Andesite is the extrusive equivalent of diorite