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Saturday, July 5, 2025
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    fluorite with calcite and chalcopyrite two of the minerals that built America

    Minerals that Built America

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    dramatic Millpillas specimen with intense blue color in its large crystals and malachite underneath

    Azurite: The Deep Blue Copper Mineral

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    smithsonite specimen mounted in a display case

    Smithsonite, Smithson & the Smithsonian

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    Russian hematite

    Hematite Mineral: A Classic Iron Oxide Explained

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    specimen collected while finding amethyst in the black range

    Finding Amethyst in the Black Range

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    ametrine crystal from Anahi Mine, Bolivia isolated on white background

    Ametrine: Unique Bicolor Quartz

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    example of a pegmatite

    Exploring How Pegmatites are Formed

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    emerald-mines-in-colombia

    Visiting Emerald Mines in Colombia

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    The Spruce Pine, NC Mining District

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    fluorescent-rocks

    Fluorescent Rocks: Mining New Jersey

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