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¿What Formed Them?

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Rocks and Minerals248 of 286The remains of my malachite collectionAncient Mysterious Termite or Ant Hole Fossils Rock Stone
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    Posted 9 years ago

    SpiritBear
    (813 items)

    The conical-shaped rock I found at the other house before we had the gravel drive replaced with rock.

    The flat-faced saddle-like one (I have a few) I found stuck in a dead-end dirt road.

    I'm not sure what they're made of or what formed them, though (They show no signs of being man-made from what I can tell). Any ideas?

    I live in West Michigan, if that helps.

    Unsolved Mystery

    Help us close this case. Add your knowledge below.

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    1250 Crt NATURAL ANTIQUE DESIGNER GREEN MALACHITE ROCK ROUGH SLAB,TILE GEMSTONE
    1250 Crt NATURAL ANTIQUE DESIGNER G...
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    Comments

    1. blunderbuss2 blunderbuss2, 9 years ago
      Glacier action probably.
    2. SpiritBear, 9 years ago
      I'm afraid that I'm gonna disagree.
    3. blunderbuss2 blunderbuss2, 9 years ago
      OK. No argument .
    4. SpiritBear, 9 years ago
      LOL.

      I think the conicle one may be sedimentary non-clastic (not made of pieces of rocks) deposited into some hole, but then what made the hole? Did it look different, but remain stuck in harder rock, which saw the flat bottom erode?
      Otherwise, my guess is volcanic. But we don't get much volcanism under the Upper Peninsula.

      Them the composition of the other rock is similar, but I have no guesses on it.
    5. blunderbuss2 blunderbuss2, 9 years ago
      I knew my reply would confuse you. LOL !
    6. SpiritBear, 9 years ago
      :/
      ¿¿¿¿¿¿¿
    7. blunderbuss2 blunderbuss2, 9 years ago
      I agree !
    8. SpiritBear, 9 years ago
      Well good night. LOL.
    9. AnnaB AnnaB, 9 years ago
      Petrified chocolate chips? :P
    10. SpiritBear, 9 years ago
      Sounds like an answer. LOL.
    11. AnnaB AnnaB, 9 years ago
      Okay then, mystery solved! :-)))
    12. NevadaBlades, 9 years ago
      Huh??????? ; P LOL!
    13. blunderbuss2 blunderbuss2, 9 years ago
      That's exactly what I thought Nevada !
    14. antiquerose antiquerose, 9 years ago
      Those are neat....Really makes you wonder how they were form......could they be from the bottom of stream at one time? Constant water erosion depending on how they sat in the water ( Placed ) to make the shapes?

      I do not know.........just guessing.......or maybe this helps:

      http://www.treasurenet.com/forums/what/39797-cone-shaped-stones.html
    15. SpiritBear, 9 years ago
      A teacher suggested for the cone one that something like a snail made a hole in a creek-bed. The hole then filled with sediment.
      So there's two votes for something pertaining to streams. LOL.
    16. ho2cultcha ho2cultcha, 9 years ago
      i found a couple of these in our cornfield on the edge of the Connecticut River when i was a kid. i always wondered what they were for and never did figure it out.

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