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Thursday, November 21, 2024
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    georgius agricola the author of de re metallica

    What is De Re Metallica By Georgius Agricola? (Part I)

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    excavated dinosaur bones at dinosaur national monument one of the best national parks for fossil viewing

    10 Best National Parks for Paleontology & Fossils

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    Kokoweef Cave Onyx: What to Cut

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    types-of-quartz

    Types of Quartz: 7 Spooky Varieties

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    a piece of jet stone and a piece of obsidian for comparison

    Jet Stone: Mysteries & Histories

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    sphalerite a secondary zinc metal

    Zinc Metal: A Mysterious Case of Disappearing

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    a menagerie of various morgan hill poppy jasper cabochons

    Poppy Jasper from Morgan Hill, CA

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    amethyst

    Amethyst Field Guide

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    heart shaped herkimer diamond just dug from a vug

    What are Herkimer Diamonds?

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    flowstone from peak caver may have been a part of anne brontës collection of rocks

    Anne Brontë & Her Rock Collection

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