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Using Mineral Resources (pages 80–85). Key Concept: Minerals are the source of gemstones, metals, and a variety of materials used to make many products. A g emstone is a hard, colorful mine r al that is shi n y . . Gemstones are used mainly f or j e w el r y . - PowerPoint PPT Presentation

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Page 1: Using Mineral Resources (pages 80–85)

Using Mineral Resources(pages 80–85)

Page 2: Using Mineral Resources (pages 80–85)

Key Concept:

Minerals are the source of gemstones, metals, and a

variety of materials used to make many products.

Page 3: Using Mineral Resources (pages 80–85)

A gemstone is a hard, colorful mineral that is

shiny.

Page 4: Using Mineral Resources (pages 80–85)

Gemstones are used mainly for jewelry.

Examples are rubies, sapphires, and diamonds.

Page 5: Using Mineral Resources (pages 80–85)

Minerals such as copper, gold, and silver are called metals.

Metals are usually softer than gemstones.

Metals are used for wires, jewelry, tools, and buildings.

Page 6: Using Mineral Resources (pages 80–85)

Other useful minerals include quartz and gypsum.

Quartz is used to make glass.

Gypsum is used to make cement.

Page 7: Using Mineral Resources (pages 80–85)

A hard, colorful mineral that is shiny is a(an)

gemstone

Page 8: Using Mineral Resources (pages 80–85)

Circle the letter of a mineral that is might be used to

make wire.

gypsumrubycopper

Page 9: Using Mineral Resources (pages 80–85)

Circle the letter of a mineral that is used to make glass.

quartzsapphiresilver

Page 10: Using Mineral Resources (pages 80–85)

Key Concept: To produce metal from a mineral, a

rock containing the mineral must be located through

prospecting and mined, or removed from the ground.

Then the rock must be processed to extract the

metal.

Page 11: Using Mineral Resources (pages 80–85)

Most metals are found in rocks that also contain other substances.

An ore is a rock that contains a metal or other useful mineral.

Page 12: Using Mineral Resources (pages 80–85)

A prospector is someone who looks for ore. To find ore, a prospector might look at rocks on the surface and study maps of underground rocks.

Page 13: Using Mineral Resources (pages 80–85)

Mining is removing ore from the ground.

Page 14: Using Mineral Resources (pages 80–85)

There are different kinds of mines.

For example, in a shaft mine, miners dig tunnels to follow

veins of ore.

Page 15: Using Mineral Resources (pages 80–85)

Smelting is removing metal from ore.

Page 16: Using Mineral Resources (pages 80–85)

For example, the ore hematite is smelted to

remove iron. In smelting, hematite is crushed, mixed with other materials, and heated.

Page 17: Using Mineral Resources (pages 80–85)

After smelting, a metal may be mixed with other substances

to make an alloy.

Page 18: Using Mineral Resources (pages 80–85)

An alloy is a solid mixture containing at least one metal.

For example, iron is mixed with carbon to form the alloy steel.

Steel is harder and stronger than pure iron.

Page 19: Using Mineral Resources (pages 80–85)

Is the following sentence true or false?

Most metals are found in the ground in pure form.

FALSE

Page 20: Using Mineral Resources (pages 80–85)

A solid mixture containing at least one metal is an

alloy

Page 21: Using Mineral Resources (pages 80–85)

A rock containing a metal or other useful mineral is

an….

ore

Page 22: Using Mineral Resources (pages 80–85)

The process of removing metal from ore is called

smelting

Page 23: Using Mineral Resources (pages 80–85)

Someone who looks for ore is a

prospector

Page 24: Using Mineral Resources (pages 80–85)

Iron occurs in an ore called

hematite

Page 25: Using Mineral Resources (pages 80–85)

Steps in Producing Metals

Prospecting

Smelting

Mining


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