What Is Tungsten? Its Minerals & Uses

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rock-city

Rock City, Montana: Hoodoos & Geology

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meet-the-carbonate-mineral-group

Carbonate Minerals: Types & Formation

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cabochon cut by malachite cabbing

Malachite Cabbing: Beauty & Challenge

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aragonite specimen

Aragonite: Formation & Crystal Types

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Copper Smelting and Early Metallurgy

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flint rock

Flint Rock: Formation and Properties

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pyrite mineral

Pyrite Mineral: Fool’s Gold Shines Bright

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pyrite mineral

Flint and Pyrite: Fire-Making Minerals

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history of birthstones includes necklaces like this heart shaped pendant necklace set with birthstones for family members

History of Birthstones: Origin & Evolution

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