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Comment: 00:40 - 01:43 (01:03)
Source: Annenberg/CPB Resources - Earth Revealed - 12. Minerals: The Materials of Earth
Keywords: introduction, "James Sadd", mineral, geologist
Our transcription: At first glance, there's nothing particularly remarkable about this scene.
These are objects that you might find at any typical campsite; however, there's a connection between them that goes beyond their obvious function.
Most of these items, as well as those that fill our everyday lives, are made at least in part of minerals, the natural minerals of which the Earth is composed.
Geologists define minerals as "solid substances that are naturally occurring and inorganic".
Minerals also have a definite chemical composition in which the atoms are arranged in an orderly pattern called a "crystalline structure".
Thousands of different chemical compositions in crystalline structures occur in nature, and combinations of these result in thousands of different mineral varieties.
If we were to take away the objects from this campsite around me that require minerals in their manufacture, there'd be very little left to look at, or sit on.
Geology School Keywords