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Geology Chap 5

Vocabulary

QuestionAnswer
Mineral A natural, usually inorganic solid that has a characteristic chemical composition, an orderly internal structure, and a characteristic set of physical properties.
Silicate Mineral A mineral that contains a combination of silicon and oxygen and that may also contain one or more metals.
Nonsilicate Mineral A mineral that does not contain compounds of silicon and oxygen.
Crystal A solid whose atoms, ions, or molecules are arranged in a regular, repeating pattern.
Silicon-oxygen Tetrahedron The basic unit of the structure of silicate minerals; a silicon ion chemically bonded to and surrounded by four oxygen ions.
Mineralogist A person who examines, analyzes, and classifies minerals.
Streak The color of a mineral in powdered form.
Luster The way in which a mineral reflects light.
Cleavage The tendency of a mineral to split along specific planes of weakness to form smooth, flat surfaces.
Fracture The manner in which a mineral breaks along either curved or irregular surfaces.
Mohs Hardness Scale The standard scale against which the hardness of minerals is rated.
Density The ratio of the mass of a substance to the volume of the substance; commonly expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases.
Created by: osubuckeye1012