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chapter 3 minerals

minerals

QuestionAnswer
Naturally occurring Created by nature.
Inorganic Cannot be created using any living thing, only NON-living.
Solid Minerals have a definite volume, and shape
Crystal Structure particles of a mineral lines up in a pattern over and over again
Definite chemical composition A mineral has definite chemical makeup of certain elements.
Mohs hardness scale Identifies hardness from softest to hardest of ten minerals.
Color Easily observed physical property.
Streak The color of the minerals powder is easily observed
Luster Its reflection of light in the minerals surface.
Density How tightly packed the matter is in the mineral.
Crystal system The minerals actual polygon shape, example cube, or hexagon.
Cleavage Mineral breaks along a flat surface, smooth break.
Fracture Mineral breaks in an irregular way, jagged and uneven.
How Minerals Form Most minerals form in two ways: through crystallization of melted materials, and through crystallization of materials dissolved in water.
Crystallization through melted materials form from magma that cools inside the crust or lava that cools on the surface. Magma cools slowly creating large minerals, and lava cools quickly creating small minerals.
Minerals in Hot Water Solution Magma heats water to very high temperatures, when the hot water cools the water and leaves the solution that creates the crystallization.
Minerals form when solutions evaporate Where minerals are found: Many rare and valuable minerals are found in or near volcanic activity and mountain building.
Gemstones Using minerals such as rubies and sapphires for jewelry
Metals Using minerals such as aluminum, iron, copper, and silver, to make other items we use or want.
Other Useful Minerals Example: talc= talcum powder
Ores a rock that contains metal or useful minerals
Prospector someone who looks for ore deposits.
Mining Where ore deposits are mined.
Types of mines A. Strip mines: Equipment scrapes away the earth's surface to find ores B Open Pit mines:Used when ores or on the earth's surface, but at least 100 meters down.
C. Shaft mines: are deep in the earth’s surface following the veins of an ore. D.Smelting: The process that is used after the ore is removed from the mine and the metal is removed from the ore.
Created by: user-1769983
 

 



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