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I found this odd shaped rock along a rocky river bed (dry) near the Illinois river in Cave Junction, Oregon. It is shaped like a Club and is super heavy. It has a distinguishable ring around the base uniform in size, and makes a dense ringing sound when rubbed? I see some reflective flakes when turned and grainy but solid material on surface, 18 inches length. any ideas? rock imagerock length reference 5 in rulerclose up of ring on base

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closed as off-topic by Jan Doggen, Friddy, trond hansen, Semidiurnal Simon, Fred Aug 30 at 17:52

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions about rock identification requests are off-topic. For more information, see the announcement on meta." – Jan Doggen, trond hansen, Semidiurnal Simon, Fred
If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ I'm voting to close this question as off-topic because. It is a rock id request, and it should be posted to a board that deals with artifacts. $\endgroup$ – Friddy Aug 30 at 15:51
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This is a sandspike concretion

Pictures can be seen here

Sometimes, only a spike is found and sometimes the spike has some 'balls' or round concretions attached to it.

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