answersLogoWhite

0

Andesite typically has a groundmass ~ 50% of grains <.25mm of metallic oxides and quartz interspersed with larger phenocrysts of pyroxene and plagioclase feldspar. Other accesory minerals may be present.

User Avatar

Wiki User

17y ago

What else can I help you with?

Related Questions

Why do andesite have small crystals?

Andesite is an Igneous Rock. It has small crystals because it cooled quickly d;D


Andesite has small crystals because?

Andesite has small crystals because it formed from lava that cooled relatively quickly at the Earth's surface, preventing larger crystals from growing. Rapid cooling does not allow enough time for the minerals to crystallize fully, resulting in smaller crystal sizes.


Does pumice have small grains?

No. Pumice does not have grains.


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.


What is a extrusive igneuse rock?

Extrusive igneous rocks are formed when lava cools and solidifies quickly on or near the Earth's surface. Due to the rapid cooling, extrusive rocks typically have small mineral grains or a glassy texture. Common examples include basalt, andesite, and rhyolite.


What are porphyritic rocks?

Porphyritic Rocks are rocks that have big and small crystal's like the Igneous Rock "Andesite".


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.


Is andesite an extrusive rock?

Yes. Andesite is the extrusive equivalent of diorite


What rocks are formed by fast cooling magma?

Rocks formed by fast cooling magma are typically fine-grained and include rocks like basalt, andesite, and rhyolite. These rocks cool quickly on or near the Earth's surface, resulting in small mineral grains and a smooth texture.