Post
by Lanny » Sun Feb 24, 2019 4:48 am
Golden Bonanza Days, Part 2:
In the meantime, I’d finished all of my adjustments on the Racer, and I went off to investigate a different spot, some way off in the excavation from the area my son was detecting, as I had seen some little pockets of intact channel that had some spidery cracks in the bedrock running outward from them on my initial walkthrough. After a few swings (no kidding), I had the coil over a soft sound. A bit of scraping later, and I’d trapped the signal in my scoop. Into the pan it went. (Now, please remember that I use a super-magnet on an extendable wand whenever I detect bedrock [worked recently or anciently], so it really helps eliminate ferrous trash, and this means that any target that goes into the scoop is non-ferrous.) After a few more swings, I’d hit on two more targets that went into the pans for my wife’s speed-panning operation. Then, a slew of targets went into the pans.
Meanwhile, as I was collecting signals, my son was busy adding more targets to his pans. (I had two pans to fill, and he had two pans for target material as well.)
During our nugget hunting, my wife set up her panning station in a convenient bedrock pool of crystal water, water about the temperature of glacial meltwater by the way, and she was ready to get her panning gloves wet (she uses those little gardening gloves that have rubber palms and fingers with a canvas back as they insulate well enough to take the sting out of the coldness), so she wandered over to my son to gather a pan of possible goodness, and she swung by me to grab one of my pans too.
(To describe the site in more detail, there was a sloped ramp that led down into the excavation where the rock trucks had run back and forth to be filled by the excavator. There were the remnants of a pad by the ramp where the excavator had sat during the last scraping of the dirt for the last cleanup, the pad having been moved up above the level of the excavation so the last of the pay could be scraped from the bedrock.
In opposition to this, the far end of the excavation had been worked first, the work proceeding backward in the direction of the exit ramp until the cleanup reached that location. What remained in the excavation or open-pit site were ridges of rising bedrock, deeper excavated low-lying areas where the bedrock was soft [or areas of contact zones where soft bedrock met hard] or where ancient channel material had gathered in natural gutters or larger crevices, and there were pools of standing water where seepage had found a way to fill depressions or where runoff from springs on the margins of the excavation had filled low spots. On a related note, some of the bedrock had been bent and warped by tremendous geological forces in the past, and these places held little concentrations of material left over from when the bedrock was super-hard enough to resist the might of the excavator’s bucket.
In a few places there were small sections of friable rock [in this case slate] that when found, I always detect first, then later pan as those plates of perpendicular placement [in 90-degree opposition to the underlying bedrock] act as excellent gold traps, traps that were working in earnest as the dinosaurs plodded across the ancient streambed when large sections of the planet were in a more tropical state.
As well, there were those aforementioned contact zones, always excellent places to detect as small slices of the softer rock were sometimes in place against the harder rock, or there were ledges, sometimes terraced, with bits of material intact, and these traps often produce some nice gold. [On a related note, I learned a long time ago to trust my detector, not my eyes when scouring bedrock. What I mean by this is that oftentimes bedrock appears to be solid, especially when is is of uniform color, so it seems a better use of time to detect areas where visible intact material is concentrated, but this is one of Mother Nature’s grand deceptions, whether the bedrock has been worked by recent miners or mother rock worked by the Sourdoughs.
Mining tip for the rookies: always, always, always take the time to go slow to let the detector read the bedrock contours and surfaces, to check the little invisible gutters and pockets, and yes, to find the hidden crevices that snapped shut when some monstrous dinosaur tromped on it while crossing, or more likely, when some massive boulders tossed along those streambeds, by some titanic hydraulic event, forced their will upon the yielding bedrock.
To be continued . . .
All the best,
Lanny
Last edited by
Lanny on Sun Feb 24, 2019 6:49 pm, edited 1 time in total.
