Mystery rock 5

arnofarrell

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Location
North West Iowa
Detector(s) used
Bounty Hunter
Primary Interest:
All Treasure Hunting

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Streak test? Psilomelane, hematite come to mind.
 

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I have never done a streak test. What does that entail exactly?
 

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Possible Slag chunk. Rub it on a piece of scrap tile and see if it leaves a color on the tile.
 

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I will go to my shed and see if I can find some tile. Thanks.
 

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