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Ch.3 Minerals Vocab

Minerals vocab

QuestionAnswer
Mineral A mineral is a naturally formed, inorganic solid that has a definite crystalline structure.
Elements A substance that cannot be separated or broken down into simpler substances by chemical means.
Compound A substance made up of atoms of two or more different elements joined by chemical bonds.
Crystals A solids who atoms, ions, or molecules are arranged in a definite pattern.
Silicate Minerals A mineral that contains a combination of silicon, oxygen, and one or more minerals.
Non-Silicate Minerals A mineral that does not contain compounds of silicon or oxygen.
Luster The way in which a mineral reflects light.
Streak The color of the powder in a mineral.
Cleavage The splitting of mineral along smooth, flat surfaces.
Fracture The manner in which a mineral breaks along either curved or irregular surfaces.
Hardness A measure of the ability of a mineral to resist scratching.
Density The ratio of the mass of a substance to the volume of the substances.
Ore A natural material whose concentration of economically valuable minerals is high enough for the material to be mined profitably.
Reclamation The process of returning land to its original condition after mining is completed.
Pegamites When magma moves upward and causes a form tear-drop shaped bodies.
Plutons As magma rises upwards through the crust it sometimes stop moving, cools and turns into a crystal.
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