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3 - Minerals
rocks.
8
Geology
Undergraduate 1
05/18/2011

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Term
Minerals
Definition
A naturally-occurring, inorganic substance with a definite crystal structure and composition. They are awesome.
Term
Basalt
Definition
Basalt is composed of minerals that crystallize from magma derived from a partial melt of the asthenosphere. Crystals are too small to see with the naked eye.
Term
Andesite
Definition
Andesite is composed of minerals that crystallize from magma derived from a partial melt of basaltic ocean crust. The large plagioclase crystals cooled slowly underground.
Term
What are 2 ways minerals can be formed?
Definition
- during crystallization of a magmatic melt.
- can precipitate directly from an aqueous (out of water) solution
Term
Atoms
Definition
Atoms are the smallest particles that define the chemical properties of matter. They are composed of protons (+ yellow) and neutrons (neutral orange) in the nucleus and electrons (-) surrounding the nucleus in defined energy levels.
Term
Ionic Bonds
Definition
Ionic Bonds result when atoms that have one or two electrons in the outer shell give those outer electrons to an atom needing electrons so they can fill their outer shell.
Term
Covalent Bond
Definition
a form of chemical bonding that is characterized by the sharing of pairs of electrons between atoms
Term
What determines how hard a mineral is?
Definition
The relative hardness of a mineral is controlled by its composition and bond strength between its constituent atoms
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