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  1. #1
    us
    Jul 2012
    Cedar Rapids, Iowa
    CURRENT: Minelab Explorer SE Pro, Garrett AT Pro & Garrett Pinpointer Pro FORMER: Garrett GTAx 1000, Ace 250 HAVE USED: Teknetics & Bounty Hunters WANT TO TRY: Tesoro and White's someday
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    All Types Of Treasure Hunting

    What is this?

    I am curious if anyone knows what this rock is. It was suggested that it might be a type of sponge coral but I don't think that is what it is. I could be wrong. One reason I don't think that it is is because it's porosity is too random and without the characteristic details of the majority of past and present sea life, as in corals. But that is only one simple reason, again, I could be wrong as I am no expert. It seems to me that it's production was the result of being liquid and highly gaseous at the same time. That leads me to think that it may be a type of volcanic spindle bomb. Most of the shapes I find these in are roundish and show some habit of elongation/tear drop shape. My thought is that this is possible if it is liquid and flying into the atmosphere, perhaps as an extruded blob of magma...or something. Your thoughts would be appreciated. Thanks!
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  2. #2
    se
    Sep 2006
    Sweden
    White's or Minelab
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    A limonite concretion, maybe?
    Geologists are gneiss, tuff, and a little wacke.

  3. #3
    us
    Jul 2012
    Cedar Rapids, Iowa
    CURRENT: Minelab Explorer SE Pro, Garrett AT Pro & Garrett Pinpointer Pro FORMER: Garrett GTAx 1000, Ace 250 HAVE USED: Teknetics & Bounty Hunters WANT TO TRY: Tesoro and White's someday
    593
    294 times
    All Types Of Treasure Hunting
    Eu_citizen, I am not sure, it is possible. Thanks for the suggestion. By the way, where in Sweden are you from?

  4. #4
    se
    Sep 2006
    Sweden
    White's or Minelab
    4,046
    332 times
    All Types Of Treasure Hunting
    Jarl, from the south eastern parts of Sweden.
    I'm located in the middle of a interesting geological feature called Trans scandinavian igneous belt.
    Geologists are gneiss, tuff, and a little wacke.

  5. #5
    us
    I collect Artifacts and Vintage Collectibles and Rocks.

    Aug 2012
    South
    Coin Finder
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    All Types Of Treasure Hunting
    If it is heavy I would say weathered iron ore. That is what I find sometimes where I live at and it looks just like it. But I could be wrong.

 

 

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