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Formation, Mining, and Use of Minerals
Cornell Notes Page 143
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REVIEW:• What do we know
about how minerals are made?– (Think about the
characteristics of minerals…)
• Naturally occurring
• Inorganic
• NOT made by humans, plants, or animals!
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How do Minerals form?
• In Magma and Lava– Minerals crystallize
in the liquid rock.– Different Minerals
begin forming crystals at different temperatures- this causes them to separate out into pure samples.
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How do Minerals form?
• In Magma and Lava– If magma cools
quickly, crystals don’t have time to grow.
– The slower the magma cools, the bigger the crystal can grow!
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• In Water– Elements and
compounds dissolved in water crystallize as the water evaporates
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Why do we need
minerals?• We eat minerals to stay
healthy- iron, calcium, salt• We use minerals for
building and construction- gypsum is used to make dry wall, iron is used to manufacture steel.
• Minerals like copper and gold are used in appliances and electronics.
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How do we get minerals?
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How do we get
minerals?
• Ore: mineral deposit large enough to be mined for profit.
• Surface Mining– Open pits, surface
coal mines, and quarries.
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• Subsurface Mining– Passageways are
dug into the Earth to reach the ore.
– Minerals are located too deep to be mined with surface mines.