OldSalt Posted July 6, 2009 Share Posted July 6, 2009 Gents, I have been coming across these rocks that are tan on the outside but red on the inside. They sound off as positive as gold when using the Falcon Detector. The darker the red color the stronger the signal. When I crushed them up, there was no gold to be found. (Found in AZ) Any idea what kind of rock this is? Very frustrating. The red is almost a red brick color. Quote Link to comment Share on other sites More sharing options...
Uncle Ron Posted July 6, 2009 Share Posted July 6, 2009 OldSalt...Those are quite common in the Vulture Mountains...I don't know what they are but when I'm hunting in an area where there's a bunch of them, I mentally tune them out...They don't quite have the signature of a metal target, at least not on my ol' sd2100 ... Still they can be irritating a bit, but that just comes with the quest for the big yella...Cheers, Unc Quote Link to comment Share on other sites More sharing options...
homefire Posted July 6, 2009 Share Posted July 6, 2009 The photo is a bit Blurry on this end. Is that Quartz I see? If you powder one, hit it with a magnet. Any thing? Iron Oxides will not be attracted. Some quartz monzonite have gold so fine you will not see it. Quote Link to comment Share on other sites More sharing options...
Texas Gld Posted July 7, 2009 Share Posted July 7, 2009 Red rock could be Cinnabar? They are common in Oregon-/Sound just like a nugget on my GBII Quote Link to comment Share on other sites More sharing options...
OldSalt Posted July 7, 2009 Author Share Posted July 7, 2009 Red rock could be Cinnabar? They are common in Oregon-/Sound just like a nugget on my GBII Darn, I think your right. "Cinnabar" actually Mercury? I have been screwing around with this stuff crushing it up. Yikes! Quote Link to comment Share on other sites More sharing options...
wyndham Posted July 7, 2009 Share Posted July 7, 2009 That little triangular wedge looks like some of the veins of Cinnabar I saw some years back in Arkansas mercury mines. All the miners died a very early death from that mining. Wyndham Quote Link to comment Share on other sites More sharing options...
Goldfinger Posted July 7, 2009 Share Posted July 7, 2009 It's not cinnabar. Just doesn't look right as the color is too pale. If it's cinnabar- it will leave a scarlet streak on a piece of unglazed porcelain. I've come across some reddish colored basalt in the field just like yours which sounds off pretty good on a vlf or vhf detector and I think that's what you have. Also had a tan colored, weathered exterior.... Steve Quote Link to comment Share on other sites More sharing options...
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