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How are rocks classified as igneous rocks?

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A rock is considered igneous if it formed directly from the cooling of molten rock.
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How are igneous rocks classified?

Igneous rocks are generally classified first on the basis of theirformation (and therefore their texture) as intrusive or extrusive.Intrusive rocks are solidified from magma u

How do you classify igneous rock?

  Igneous rocks are classified by their mineral composition and texture.

One of the two items used to classify igneous rocks?

If u are at a science class and do this for homework, I'm glad that I gave you then answer, it took me 10 minute to figure out It's Composition

How are igneous rocks classified according to composition?

Igneous rocks are classified by either being intrusive or extrusive, then mafic or felsic then they are classified by either fine grain or course grained textures.

How do igneous rocks form and how are they classified?

Igneous rocks are formed by the cooling of lava (above Earth's surface) or magma (below). Rocks in general are classified by their mineral composition, texture, and origin. Ig

What two properties are used to classify igneous rock?

Granite and Andesite are two main factors of Igneous rock! Granite - Used for bench tops etc... And Andesite - Used for Walls and very strong things.

What are two major properties used to classify igneous rocks?

The two major properties used to classify igneous rock are: Crystal Size/Texture--Small crystals are indicative of rapid above ground cooling of lava into what is classified
In Geology

What two characteristics are used to classify igneous rocks?

Intrusive and extrusive factors of an igneous rock classify them. The other factors are if they are vesicular, coarse, fine grained, glassy, or very coarse

What 2 ways igneous rocks are classified?

Extrusive (cooling of lava/magma above the earths surface) and Intrusive (cooling of lava/magma below the earth's surface)