Comment: 01:43 - 02:41 (00:58)
Source: Annenberg/CPB Resources - Earth Revealed - 12. Minerals: The Materials of Earth
Keywords: "James Sadd", mineral, rock, crust, "open-pit mine", steel, "iron ore", "sand dune", quartz, glass
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Our transcription: Human society depends on the products that it invents and manufactures, and minerals are an important raw material.
The minerals we use in the manufacture of consumer goods and that are a part of virtually any man-made object you can name are also found here in the rocks that make up the Earth's crust.
In this open pit mine, for example, iron ore is extracted from the Earth.
It is smelted and combined with other mineral products to form steel which is molded to make automobiles, ships, and skyscrapers.
From these sand dunes, quartz grains are separated, then melted and molded to form glass, which is used to fill the windows of the world.
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Geology School Keywords
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