By
Jeff McClendon
Hi,
I couldn't wait to get the Equinox 800 to Arizona for some gold prospecting especially since the area in Colorado where I live is frozen pretty solid.
The first site I hunted was in the Little San Domingo Wash area which has been pounded by lots of people for over a hundred years. I used the Nox 800 exclusively in Gold 2 with the 6" coil due to an abundance of human metallic trash, with sensitivity at 15 to 16 (falsed over those settings) with -9 to -4 discriminated out, iron bias 3 or 4, recovery speed 4. Hot rocks were hitting in the -9 to -6 range and also sometimes in the 12 to 14 range with the classic boing sound just at the edges of the coil and almost nulling in the center. I dug every detected metallic target in roughly a 30'x40' area. Iron targets were consistently in the -9 to +16 range depending on depth, size and amount of oxidation. Many of them jumped that whole range depending on direction of swing. When I was not using the horseshoe (all targets accepted mode) the iron targets would have very brittle, broken, clipped sounding audio and would be easy to identify just by sound alone. 100% of the time I checked those targets by pressing the horseshoe button and iron was suggested with -4 to -9 numbers included in the very jumpy target IDs. After digging each of these targets, (60 or so) iron was confirmed. I detected 19 non ferrous targets which all turned out to be lead, brass, aluminum or steel bird shot. Small lead, aluminum and shot gave beautiful evenly rounded tones and target IDs in the -1 to 4 range which were very steady and repeatable even after checking the target from a different direction. Larger lead and shell casings came in between 8 and 20 consistently with even, repeatable tones and solid numbers.
The two nuggets pictured were both found near other targets, which is probably why they were missed. The .5 gram nugget was 4" deep with an iron target about 2" away and above the nugget. I never heard the iron initially. I only heard the classic zip-zip with a solid 3 target ID. When the horseshoe button was engaged I could hear and see target ID evidence of the iron target too. The two targets were clearly and separately defined and easy to identify as ferrous and non-ferrous. I was really exited to find that small nugget attached to caliche in that situation! The 4.5 gram nugget was 5" down, up against a large piece of hot volcanic tuft/basalt bedrock. The Nox 800 gave soft boings on the bedrock in several places near the nugget but the nugget screamed out a fantastic round signal at a rock solid 14. I thought it was going to be a 38 cal. or bigger slug. I was really surprised when I saw that first bit of gold peaking through the dirt!!!!! I lucked out on one other tiny picker at this location too during final clean up with the XP Deus.
I also got to detect near Stanton on some placer/pegmatite deposits with tons of hot and cold rocks, huge prickly pear cactus and my least favorite----cat's claw bushes=OUCH. I completely shredded a virtually new pair of gloves on those things along with my hands too. I didn't find any gold with either my GPX 4800, XP Deus or the Nox 800. The GPX 4800 is one deep machine and hunted beautifully in this rugged area. I dug several up to 1 foot deep, less than coin sized lead, iron and tin targets that could have easily been gold with a NF Sadie and stock 11" mono coils. Any thing bigger was just not very practical since this was a boulder strewn, thorny area with very little open ground. The Deus with 9" HF coil at 54kHz handled the hot and cold rocks fairly well and was reasonably quiet in Gold Field. It always gave excellent audio responses to detectable targets and gave a predictable horizontal XY graph line for buried iron targets and very angular zig zags on near surface iron. Lead targets had more of a rounded, almost cursive writing indication on the XY graph which looks a lot like gold responses. The Nox 800 with 6" coil in Gold 2 again gave very clear indications of what to expect from the targets under the coil and after digging, those indications were confirmed every time with no surprises. There was some nasty hot magnetic schist, cold ironstone and unbelievable amounts of magnetite which sometimes confused the Deus and especially the GPX 4800. The Nox dealt with them very consistently with the magnetite giving iron signals, the magnetic schist reading in the 12 to 14 range and the cold ironstone high pitched VCO screaming at 39.
Special thanks to Bill Southern and Tammy and also Rob Allison for their guidance during my fruitful trip.
The Equinox 800 proved to be an outstanding and very trustworthy prospecting detector!
Jeff
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