northwest Hot rocks?
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australian electronic gold prospecting forum.com  |  QED users  |  QED users (Moderator: bugwhiskers)  |  Topic: Hot rocks? 0 Members and 1 Guest are viewing this topic. « previous next »
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Doug
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« on: Thursday February 14 2019 16:11:33 AEDT PM »

 With the Thb set at  null and the QED  Gb what are users finding is the most common hot rock tone- rising/falling/ usually both?
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Goldman
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« Reply #1 on: Thursday February 14 2019 17:01:19 AEDT PM »

Hi Doug,
unfortunately hot rocks can be both. Hot rocks are just yet to be decomposed material, noting that the surrounding ground is really just fully decomposed hot rocks. So the rising or falling signal is relative to the GB set for the surrounding ground and should be able to be MGB out.
Something I am going to try out next week is to check whether I need to adjust the GB for the surrounding ground once MGB over a hot rock. In reality there should only be a few clicks in it, but I will report back with my findings after next weeks test.
Cheers Goldman
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GARY
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« Reply #2 on: Tuesday June 4 2019 17:23:52 AEST PM »

  

Something I am going to try out next week is to check whether I need to adjust the GB for the surrounding ground once MGB over a hot rock. In reality there should only be a few clicks in it, but I will report back with my findings after next weeks test.

Cheers Goldman

Goldman did you get to do that test after MGB'ing over a HOT rock and then checking if the GB still needed to be adjusted for the surrounding ground?

Gary.
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Goldman
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« Reply #3 on: Wednesday June 5 2019 12:04:38 AEST PM »

Hi Gary,

Testing performed to date confirms that hot rocks can be GB’d out, however the GB movement is too much to be able to continue detecting the surrounding area without re ground balancing.

I suggest that the 11 elite that I’m using is a very sensitive coil, so using a less sensitive coil ( i.e. not flat wound) would help in controlling hot rocks and ground noises.

Cheers Goldman
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algore_rhythm
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« Reply #4 on: Monday July 29 2019 18:23:01 AEST PM »

Returned home with samples of Hotrocks from a Northern NSW trip last week. Both rising and falling pitches led me to retrieving these samples. They were all quite deep down (approx 10 inches). I broke these samples up to see what was inside and found shiny silver colored material embedded within the rock.

Used an 8" Detech coil. All part of learning the ropes!
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Blip
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« Reply #5 on: Monday July 29 2019 20:06:36 AEST PM »

I brought home a very noisy rock of about 200 mm. It had traces of fine quartz through it but as I broke it up and waved it under the 11” mono, the signal lessoned till all pieces were small and no signal whatsoever present.
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algore_rhythm
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« Reply #6 on: Monday July 29 2019 20:25:41 AEST PM »

Just crushed these Hotrocks up to a fine dust with a view to panning it out to see if any coloured specks are evident within them. Before panning, i ran the Pin Pointer over the samples and received constant signals. I then used a magnet and ran that over the sample. More or less all the sample adhered to the magnet. Panning probably will be futile as i believe the samples are full of Magnetite. Good exercise for me and part of the overall learning process.
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Blip
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« Reply #7 on: Monday July 29 2019 21:24:53 AEST PM »

That it is.
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Goldman
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« Reply #8 on: Monday July 29 2019 22:12:31 AEST PM »

I hit a few today, one in particular had quartz attached, thinking specie, but no. I broke it open and it was just dripping with iron oxide, every piece produced a signal and it was not magnetic.

Cheers Goldman
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