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Rocks & Minerals

Non-fossil specimens of geologic origin.

1,728 topics in this forum

  1. What causes this? Sand "sculpture" found on Mississippi River. 1 2 3

    By Raistlin,   
    • 71 replies
    • 1.6k views
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    Lightweight silver rock and crystal cluster

    By amy Susanne,   
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    • 1 reply
    • 5 views
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    Please help identify strange green and other rocks from the Aegean Sea

    By AnnaNova,   
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    • 5 replies
    • 143 views
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    Need help identifying this mineral I pulled from mining claim in Utah

    By MINDZAI,   
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    • 2 replies
    • 125 views

  5. Some sort of igneous rock? Western NY state

    By moodorf,   
    • 4 replies
    • 171 views

  6. Need an ID on this black rock (Western New York)

    By moodorf,   
    • 18 replies
    • 319 views
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    Can one Help? What is this?

    By Advance,   
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    • 12 replies
    • 172 views
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    Meteorite?

    By RoelaMcDB74,   
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    • 2 replies
    • 116 views

  9. What are the bubbly/pustule-like structures on this flint piece?

    By Paleoworld-101,   
    • 9 replies
    • 153 views

  10. What mineral - green vein?

    By Kimdenise,   
    • 10 replies
    • 234 views
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    I have this rather strange amethyst

    By TheUnloadedone,   
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    • 3 replies
    • 112 views
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    My meteorites

    By Desertau,   
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    • 4 replies
    • 234 views
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    Found on Loch Fyne

    By Scotland Traveler,   
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    • 2 replies
    • 119 views
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    New jade a Quartz Based stone

    By Desertau,   
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    • 7 replies
    • 240 views

  15. Is this chert?

    By Fitch,   
    • 2 replies
    • 138 views
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    Please help identify this interesting rock!

    By pebbles2,   
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    • 19 replies
    • 573 views
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    Need help identifying a few stones please

    By Dgbarry,   
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    • 2 replies
    • 155 views
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    What is this

    By Mabelg201,   
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    • 2 replies
    • 180 views

  19. What kind of opal and from where ?

    By Brevicollis,   
    • 1 reply
    • 145 views

  20. Meteorite or other iron-rocky piece?

    By v100v,   
    • 10 replies
    • 345 views
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    Some Gold

    By Desertau,   
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    • 2 replies
    • 192 views
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    Iron Pyrite?

    By Riverocks,   
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    • 2 replies
    • 260 views

  23. What are these five rocks?

    By Jiesen,   
    • 3 replies
    • 194 views

  24. Pumice?

    By Fullux,   
    • 1 reply
    • 182 views

  25. Identification of geode with dentrite and fluffy mineral inside

    By Coinwalla,   
    • 1 reply
    • 195 views
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