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Jim in Idaho

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About Jim in Idaho

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  • Birthday 12/21/1948

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  • Location:
    Blackfoot, Idaho
  • Interests:
    Prospecting, machining, equipment design/build, predator hunting, flyfishing
  • Gear Used:
    Whites GMT, TDI-SL, DFX. Homebuilt mineral jigs/with auto-feeder, for gems. Polaris 4 x4 ATV

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  1. Concentric Vs DD

    Good info, Steve...thanks1 Jim
  2. Makes Ya Think

    John, that trap Kiwi showed, and the one I found are leghold traps. They're not designed to kill, they're designed to close on the leg, and as the leg is pulled up, they're made to grab whatever they can...usually toes. What Fred said is the truth. I'd love to find one of those old grizzly bear traps, with the big teeth. That would be worth some bucks. Jim
  3. Makes Ya Think

    Last winter, I was exploring the McCullough Range in southern Nevada, and found a double spring # 3 Victor trap. Probably set for coyotes back when they still allowed grazing in there. It was on the edge of a drywash, and probably drug there by the critter. Still had the stake and chain attached. It was on top of the ground, so I didn't have to worry about getting "bit"..LOL It still works, too. Jim
  4. Using The GMT To Find Black Sand Paystreaks

    You can count on that. I got tangled up on another project, and ran out of time on the black sand thing. Hoping to get back at it soon, assuming the weather doesn't get me. Jim
  5. Using The GMT To Find Black Sand Paystreaks

    Chris, the only real use I can see for this feature is trying to locate pay streaks of flour gold. That's what I really wanted it for. I live very close to the Snake River, and the river is full of very tiny flour gold.....the amount is estimated in the billions of dollars worth. Because of its shape factor, that flour rides well up in the water column, and is deposited on the surface as the high water goes down. The follow the black sand feature could be useful, if it worked, to find those surface paystreaks. As far as finding deeper larger gold with that feature, I agree with you...not much benefit.
  6. Using The GMT To Find Black Sand Paystreaks

    LOL...yes, John, they did. And I've still got my old Garrett Master Hunter BFO, with two double coil sets for it. Jim
  7. Thanks, Chris. I was under the impression that while you might see through one, you can't read text or see a straight line through one. Jim
  8. I'm with Chris. A simple test is to look at at text through it. Or even a straight line, or some sort of edge. If you can see it, it's not a diamond. You can't see through diamonds. Also, it doesn't have the luster of a raw diamond. jim
  9. Concentric Versus DD Coils On White's MXT

    John, the RNB packs for the GMT, DFX, MXT, etc. are 3-cell packs. max voltage is 12.6...perfectly safe in those models. RNB doesn't make a 4-cell pack in that configuration. To my knowledge, the only person making, and selling the 4-cell pack is Reidman. You defintely don't want to put a 4-cell pack in the aforementioned detectors, but it works terrific in the TDISL. Jim
  10. Using The GMT To Find Black Sand Paystreaks

    yes, and sadly, it's still too slow to change the numbers. Required several pumps over my samples to get the numbers to change....not good. This whole discussion makes me wonder why no mfg. has offered a simple machine to do nothing but track black sand concentrations? Maybe it's more complicated than it appears.
  11. Using The GMT To Find Black Sand Paystreaks

    Thanks, Steve...good read!
  12. Using The GMT To Find Black Sand Paystreaks

    I figured it was time to do some serious testing on this, Steve. I've seen tidbits here and there, but nothing very definitive. I'd read that you had to pump the coil to make it work. Nobody is going to spend more than few minutes doing that! Talk about arm-weary...LOL. There's a branch of the Snake not far away, that is now dry. River hasn't run there for thousands of years. I thought it might be a good place to look for black sand streaks, and collect some material to pan. I decided I needed to know just what the GMT could do for me in that regard. When I get some time on the dry channel, I'll be sure and post it. Jim
  13. I've been planning on some testing of the GMT's ability to find paystreaks of black sand. Finally went down near the Utah border and collected some sand to use. I was disappointed in how slow the GMT's indicator changed over the sand I used. Much too slow, unless you want to die of boredom before finding any. That's probably why so little is written about it. It only works in "autotrack", too. I tried various levels of V-Sat, Gain, etc., but nothing worked in a way I'd spend much effort doing. But, I DID find something that works.` I put the GB in Manual, and cranked the GB as POSITIVE as it goes (99). That way, it only responds to REALLY strong positive signals, and most negative signals. I turned the THRESHOLD all the way down. At those setting you hear very little ground noise, but still get a good response on the black sand. The gain can be adjusted to ignore the general levels of blacksand on a bar, but still respond to a higher concentration of it. The response is fast, so you can run the detector as if looking for gold. Of course, you won't hear any non-ferrous targets at these settings...they're strictly for finding concentrations of bs. The concentric coils had a definite advantage over the DD, but I would have no problem using the DD for this. I was using blends of pure magnetite,or at least ALL of the black sand I used could be picked up with a magnet, mixed with sand that had no magnetic iron in it. I used both a 1:5 ratio of bs to white sand, and a 1: 10 ratio. Both were detected at nearly 4". I didn't try any ratios below 1:10, but I'm sure a ratio of 1: 20 would be detected, but might be only at shallower depth, depending on where the gain was set, and that would depend on the level of bs in the general run of the bar being detected. Another thing on the mixes used....I used a teaspoon of magnetite in each mix. Put them in sandwich bags, and spread it into a thin layer. But, to be fair, the coils could always see the entire teaspoon of magnetite, as the test blend, even spread out, was smaller than the area of the coil. All of the sand used was smaller than #50. I tried using the "learn accept" function on the DFX, but could make nothing work on that for finding black sand. Tried several different programs and settings, with complete lack of success. Jim
  14. A Shoutout To Whites

    Many thanks, Steve! Jim
  15. A Shoutout To Whites

    Well do, John, assuming I can figure out how to do it. Maybe I'll just email you a couple. Jim