 | Rocks: Galleries of igneous, sedimentary and metamorphic rock photos with descriptions. |
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 | Minerals: Information about ore minerals, gem materials and rock-forming minerals. |
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 | Volcanoes: Articles about volcanoes, volcanic hazards and eruptions past and present. |
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 | Gemstones: Colorful images and articles about diamonds and colored stones. |
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 | General Geology: Articles about geysers, maars, deltas, rifts, salt domes, water, and much more! |
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 | Geology Store: Hammers, field bags, hand lenses, maps, books, hardness picks, gold pans. |
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 | Diamonds: Learn about the properties of diamond, its many uses, and diamond discoveries.
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