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Rocks & Minerals

Non-fossil specimens of geologic origin.

1,691 topics in this forum

  1. Largest pink diamond in 300 years unearthed in Angola

    By Oxytropidoceras,   
    • 0 replies
    • 60 views

  2. Gypse from Oz :)

    By nala,   
    • 2 replies
    • 64 views

  3. The World's Largest Geode ? (Spain and Ohio)

    By Oxytropidoceras,   
    • 0 replies
    • 54 views

  4. Crystal ID help

    By Amanda074,   
    • 4 replies
    • 87 views

  5. Possible petrified wood Please help.

    By Amanda074,   
    • 7 replies
    • 96 views

  6. Rock Identification Help

    By Amanda074,   
    • 3 replies
    • 75 views

  7. interesting chert I think

    By Jdeutsch,   
    • 0 replies
    • 45 views

  8. Unusual markings

    By Jackmandu,   
    • 2 replies
    • 84 views

  9. Help Identifying Crystal

    By Amanda074,   
    • 4 replies
    • 104 views

  10. Beautiful clump of quartz crystals

    By expatspain,   
    • 2 replies
    • 99 views

  11. What this mineral could be?

    By nala,   
    • 5 replies
    • 66 views
    • New Members

    What is in this echinoid

    By Jennifer Gentry,   
      • New Members
    • 6 replies
    • 172 views

  13. Show Us Your Quartz 1 2

    By Ordovician_Odyssey,
    • 27 replies
    • 2.1k views

  14. Life Helps Make Almost Half of All Minerals on Earth

    By Oxytropidoceras,   
    • 3 replies
    • 68 views

  15. Aragonite (cave calcite)?

    By Ramona,   
    • 16 replies
    • 155 views

  16. Eye catching

    By Jackmandu,   
    • 3 replies
    • 73 views
    • New Members

    Copper Ore piece

    By Mountainboy,   
      • New Members
    • 6 replies
    • 108 views

  18. Muscovite Mica and Calcite?

    By Ramona,   
    • 3 replies
    • 163 views

  19. Anybody know what this rock/mineral might be?

    By PRLE,   
    • 4 replies
    • 77 views

  20. Show Us Your Pyrite 1 2

    By fossil lover 101,
    • 38 replies
    • 3.6k views
    • New Members

    My daugter sent this picture of rock she found in Colorado recently - I could not ID?

    By Havasu,   
      • New Members
    • 7 replies
    • 153 views
    • New Members

    Interesting.... formation I found. Please, tell me all that you know.

    By Ikikit,   
      • New Members
    • 2 replies
    • 67 views

  23. Septarian Nodule?

    By Steph,   
    • 11 replies
    • 187 views

  24. What could it be?

    By nala,   
    • 4 replies
    • 67 views
    • New Members

    I’m clueless

    By Daddy82,   
      • New Members
    • 5 replies
    • 66 views
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