Igneous Rocks
The Rocks when magma cools and crystallizes
Igneous Rocks
Fine-grained textured igneous rocks.
Aphanitic rocks.
Full form of FELSIC.
FELdspar and Silica-quartz.
Achondrites include meteorites from these 3 places.
Asteroids, Mars, and the Moon.
Magma develops here.
In the lower crust or upper mantle.
Rocks that are similar to the texture of broken glass.
Glassy rocks.
Acid igneous rocks lack these 2 elements.
Achondrites are igneous rocks, meaning at some point they were melted into this.
Magma
The two main categories of Igneous Rocks.
Rocks in which the mineral grains are large enough to be seen with the naked eye.
Phaneritic Rocks.
Basic igneous rocks
The process when magma cools and creates a concentric layered structure.
Igneous Differentiation.
Extrusive Rocks are formed here.
Igneous rocks that contain conspicuous phenocrysts.
Porphyritic Rocks.
Basic rock minerals
Achondrites can give us this important information.
The internal structure and formation of the planets.
Intrusive Rocks are formed here.
Within the crust of the planet.
Example of a dark-colored igneous rock.
Basalt
How much lower is the melting point of acid rock minerals than mafic rock minerals.
Hint : Don't give a numerical value.
Melting point of acid rock minerals is half of that of mafic rock minerals.
An example of a course-grained acid rock.