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phoenix

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phoenix last won the day on November 4 2017

phoenix had the most liked content!

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About phoenix

  • Rank
    Silver Member
  • Birthday April 7

Profile Information

  • Gender
    Male
  • Location:
    central Victoria- Australia
  • Gear Used:
    GPZ 7000 SDC2300

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  1. Dd Depths

    hey Goldgetter. My understanding of it is, and I`m certainly no expert, on a 11" DD, the transmit and receive windings are approx 11 by 5½" each. On a 18" DD the transmit and receive are 18 x 9½" each. Because in the bigger coil the windings are wider, like in a bigger mono coil, the bigger coil will go deeper but wont be as hot on the small stuff. Dave
  2. Fun In The Sun

    What a terrific piece Lunk. Well done
  3. Hey LipCa. To take photos of the small stuff, and unfortunately that`s mostly what I find, I use a USB microscope. If you get one. dont get a 800 or 1000 power. they`re too hard to focus and their depth of field is very small. I took that photo with a 200 power. My `scope only cost 13 bucks but here`s one I found on ebay for 15. Dave https://www.ebay.com.au/itm/Black-UK-New-Pro-200X-8-LED-USB-Digital-Microscope-Endoscope-Magnifier-Camera-CS/202060661146?epid=1649400763&hash=item2f0bc1019a:g:7aEAAOSwZuRZwnxk
  4. I discovered a week or so ago that the American one dime is 7½% smaller than the Australian five cents I normally use, so I bought one on ebay. I think a couple of bucks is a small price to pay to get bigger gold. Here is some pieces I got on my last outings. They`re way bigger now.
  5. That is amazing. I did not know that such a thing as a commercial altitude gym existed
  6. Hey tvanwho. Yeh oxygen levels drop off pretty dramatically the higher you go. At 5000 feet, instead of 20.8% oxygen, there is only 17.3%. I am not asthmatic but for over 30 years I was a very heavy smoker and I reckon, today if I was to do strenuous activity at 5000 ft it would knock me around as well. When I was about 35, at the height of my smoking, in the middle of winter, I got to the top of MT Kosciuszko (7310 ft) and it damn near killed me. I have no idea how you would train up to work at altitude but I think the older you get the harder it will be. Dave https://www.higherpeak.com/altitudechart.html
  7. GPZ Memories...classic!

    What a magnificent piece
  8. Little Speci

    Very nice find mate, it`s a good looking piece
  9. Record Nugget Found With Gpz!

    Sorry Walker, but I`ve got to ask mate . What record have you broken? Is it your biggest or smallest?
  10. Finally Got Out For A Detect

    I`ve never seen Roger Waters but I saw Pink Floyd at the Sydney Entertainment Centre many years ago. Best concert I ever went to. I haven`t been getting out much either because of the heat. Congratulations on the gold mate.
  11. Camera

    What Remis is asking is, he is after recommendations for buying a camera to use while he is detecting. He sent me a PM and I can`t help him. I suggested he ask this very knowledgeable forum. Unfortunately the Turkish to English translation (and the other way around) gets very garbled sometimes. Dave
  12. Hey Ramis. I have not used either coil, but when I had the 5000 I had the 18" Goldstalker and it was very stable. For what it`s worth, I was told about a bunch of tests that were done on a test bed here in Victoria, and apparently, for out right depth, the 22" Goldstalker beat everything including the 25" Nugget Finder. I wasn`t there, I didn`t witness the tests, but that`s what I was told. Dave
  13. To Obtain Precious Metal From Iron

    hey Ramis. If it is a IRON OXIDE mine there might be gold and silver in it. Here in Australia there is a iron oxide mine called Olympic Dam, which apparently, is the biggest uranium reserve in the world. According to wikipedia there is reserves of 2.95 billion tonnes of ore grading 1.2% copper, 0.04% uranium, .5 g/t of gold and 6 g/t of silver. If I am doing the figures right, that means the gold reservers are approx 47 million ounces and the silver reserves are approx 569 million ounces. But here is the problem, it is not economically viable to mine the gold and silver and the only reason they are pulling the stuff out of the ground is to get at the uranium and copper. Uranium and copper produce 95% of the mines income. Gold and silver are a by product. Stick with your metal detecting. https://en.wikipedia.org/wiki/Olympic_Dam_mine
  14. My bad mate, I mis understood your question. I hope somebody can answer it for you. Dave
  15. Hey Doc. Gold silver and copper are all very good electrical conductors because of their atomic structure, in a individual atom they all only have one electron in their outer orbit. Lead has four electrons in it`s outer orbit and doesn`t conduct electricity as well as the other three. Here is a description I found for why different materials are used "Conductivity refers to the ability of a material to transmit energy. There are different types of conductivity, including electrical conductivity, thermal conductivity, and acoustical conductivity. The most electrically conductive element is silver, followed by copper and gold. Silver also has the highest thermal conductivity of any element and the highest light reflectance. Although it is the best conductor, copper and gold are used more often in electrical applications because copper is less expensive and gold has a much higher corrosion resistance" https://www.thoughtco.com/the-most-conductive-element-606683
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