hi all bit new to this online stuff,my sisters sharp eye saw this rock before we sucked it up dredging in the weekend,its quartz with a bluish streak through it. my guess is copper?
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That colour makes me think copper too… smash it open and see what’s inside! 
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Does it nut off on a detecter? A Minelab Gold Monster should give a squeek if it is metalic.
JW 
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good advice,gave it a go with my 2300 but no noise,might take it to the mineral club at shantytown next time im coastside
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