chapter 2, section 3 mineral resources wednesday, november 4, 2009 pages 62 -- 66 wednesday,...
TRANSCRIPT
Chapter 2, Section 3Mineral Resources
Chapter 2, Section 3Mineral Resources
Wednesday, November 4, 2009Pages 62 -- 66
Wednesday, November 4, 2009Pages 62 -- 66
ObjectivesObjectives
Describe how minerals are used. List the three types of mines. Explain how ores are processed to
obtain metals.
Describe how minerals are used. List the three types of mines. Explain how ores are processed to
obtain metals.
Vocabulary WordsVocabulary Words
Gemstone Ore Smelting Alloy
Gemstone Ore Smelting Alloy
Uses of MineralsUses of Minerals
Minerals are the source of metals, gemstones, and other materials used to make many products.
Minerals are the source of metals, gemstones, and other materials used to make many products.
GemstonesGemstones Gemstones are hard,
colorful minerals. Gemstones have a
brilliant or glassy luster.
Gemstones are valued for their color.
Gemstones are called gems once they are cut and polished.
Gemstones are used mainly for jewelry and decoration.
Gemstones are hard, colorful minerals.
Gemstones have a brilliant or glassy luster.
Gemstones are valued for their color.
Gemstones are called gems once they are cut and polished.
Gemstones are used mainly for jewelry and decoration.
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MetalsMetals
Minerals are sources of metals such as aluminum, iron, copper, or silver.
Metals are used to make tools and machinery.
Metals all begin as minerals inside Earth’s crust.
Minerals are sources of metals such as aluminum, iron, copper, or silver.
Metals are used to make tools and machinery.
Metals all begin as minerals inside Earth’s crust.
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Other Uses of MineralOther Uses of Mineral
Talc -- baby powder Quartz -- glass;
timepieces Calcite -- optical
equipment. Kaolin -- china Gypsum -- cement Corundum --
polishing and cleaning products
Talc -- baby powder Quartz -- glass;
timepieces Calcite -- optical
equipment. Kaolin -- china Gypsum -- cement Corundum --
polishing and cleaning products
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OresOres
An ore is a rock that contains a metal or economically useful mineral.
Most metals do not occur in pure form.
An ore is a rock that contains a metal or economically useful mineral.
Most metals do not occur in pure form.
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Gold ore
ProspectingProspecting
People who look for an ore deposit are called prospectors. They observe the
land surfaces. They examine
surrounding plants. They look at results
of sound waves.
People who look for an ore deposit are called prospectors. They observe the
land surfaces. They examine
surrounding plants. They look at results
of sound waves.
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MiningMining
There are three types of mine: Strip mines Open pit mines Shaft mines
There are three types of mine: Strip mines Open pit mines Shaft mines
Strip MiningStrip Mining
Earthmoving equipment scrapes away soil to expose ores.
Earthmoving equipment scrapes away soil to expose ores.
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Open Pit MiningOpen Pit Mining
Giant earthmoving equipment is used to dig a tremendous pit.
Pits can extend 100’s of meters below the surface.
Giant earthmoving equipment is used to dig a tremendous pit.
Pits can extend 100’s of meters below the surface.
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Shaft MinesShaft Mines
Shaft mines have a network of tunnels.
They follow veins of the ore.
Shaft mines have a network of tunnels.
They follow veins of the ore.
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SmeltingSmelting
Smelting is the process where ore is melted to separate the useful metal from other elements that ore contains. Involves mixing an ore with other
substances and then heating the mixture to a very high temperature.
The heat causes the metal to separate from the oxygen with which it is combined.
After smelting, an addition process is added to remove impurities.
Smelting is the process where ore is melted to separate the useful metal from other elements that ore contains. Involves mixing an ore with other
substances and then heating the mixture to a very high temperature.
The heat causes the metal to separate from the oxygen with which it is combined.
After smelting, an addition process is added to remove impurities.
HomeworkHomework
Workbook Section 2.3 due 11/6 Vocabulary quiz 2.3 only on 11/6 CHAPTER 2 TEST RESCHEDULED --
NEW DATE: 11/11.
Workbook Section 2.3 due 11/6 Vocabulary quiz 2.3 only on 11/6 CHAPTER 2 TEST RESCHEDULED --
NEW DATE: 11/11.