0
Igneous rocks are usually classified by their chemical composition (acidic or basic), and by whether they formed underground (intrusive, characterised by large mineral crystals) or on the surface (extrusive, made of tiny, microscopic crystals). For instance, basalt is a basic, extrusive rock, and granite is an acidic, intrusive rock.
Wiki User
∙ 8y ago
Wiki User
∙ 12y agoGranite and Andesite are two main factors of Igneous rock! Granite - Used for bench tops etc... And Andesite - Used for Walls and very strong things.
Add your answer:
Earn +20 pts
Can igneous rock be felsic?
Yes. Felsic is a term used to describe the composition of some igneous rocks.
What is the igneous rock in the United Kingdom that forms a circle used as a calendar long ago?
rock cycle
What 2 properties classify rocks?
They use the mineral composition, color, and texture.
What is the most abundant igneous rock that is hard and is mainly used in buildings and monuments?
granite
What do intrusive rock have in common with extrusive rocks?
Sedimentary rocks are not classified by the terms intrusive or extrusive. These are terms used specifically for igneous rock classification, referring to rock that has formed from melt either below or on the surface.
One of two items used to classify igneous rock?
Their crystalline nature.
What 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 chemical property is most commonly used to classify igneous rock?
The percentage of its composition of silica.
Is conglomerate intrusive or extrusive?
Neither. Conglomerate is a sedimentary rock. Intrusive and extrusive are descriptive terms used to classify igneous rocks.
Which igneous rock used for cobblestones and landscaping?
There are many igneous rock but simply put the igneous rock that is used for the making of cobblestones is basalt.
What does intrusive and extrusive mean?
These two terms are used to classify igneous rock. Intrusive igneous rock has solidified from magma, below the surface of the Earth. Extrusive igneous rock has solidified from lava, at or near the surface of the Earth. Intrusive rock displays a coarse-grained rock texture, a result of the slow cooling of magma. Extrusive igneous rock will display either a fine or a glassy texture, depending on the speed of solidification of the lava.
What would not be used to classify igneous rocks?
crystal size
What is the name of the igneous rock used in monuments?
Granite is the name of the igneous rock used in monuments.
What three things are used to classify igneous rocks?
Color and texture is one way to classify igneous rocks. Another way to do this is modal classification and normative classification.
What is the chemical property used to classify igneous rocks?
youre mom
What rock is used for decorating?
igneous rock
Is obsidian rock organic or chemical?
Obsidian is a volcanic glass which forms when a high silica melt solidifies quickly after eruption. Organic and chemical are terms used to classify sedimentary rock. Obsidian is an igneous rock type.
