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Gold Prospecting
Metal Detecting for Gold
A Durikai Rock
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<blockquote data-quote="Keen Ken" data-source="post: 347073" data-attributes="member: 211"><p>Hi Splinter,</p><p>yes I was using a PI machine a gpx 4500, usually have it pretty well balanced with very little ground noise. this rock went off like a coin. Still no visible gold, this one is more striated inside and looks more like a gritty quartz ( not like sandstone at all)though not as hard but has the texture of silcrete or a broken gibber, not so hard or shinny though. a bit like a gneiss grainy structure but only half as hard. Not like your normal "hot Rock", thats why I kept it. The interesting thing is the MD 20is a vlf unit and to gives the sam strong signal even in small piece. </p><p>Most hot rock the signal decreases when you break them up. Maybe another metal other than gold. can't see any thing under the microscope either (40 x)</p></blockquote><p></p>
[QUOTE="Keen Ken, post: 347073, member: 211"] Hi Splinter, yes I was using a PI machine a gpx 4500, usually have it pretty well balanced with very little ground noise. this rock went off like a coin. Still no visible gold, this one is more striated inside and looks more like a gritty quartz ( not like sandstone at all)though not as hard but has the texture of silcrete or a broken gibber, not so hard or shinny though. a bit like a gneiss grainy structure but only half as hard. Not like your normal "hot Rock", thats why I kept it. The interesting thing is the MD 20is a vlf unit and to gives the sam strong signal even in small piece. Most hot rock the signal decreases when you break them up. Maybe another metal other than gold. can't see any thing under the microscope either (40 x) [/QUOTE]
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Gold Prospecting
Metal Detecting for Gold
A Durikai Rock
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