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  1. I have been working a creek and have done fairly well. There have been at least 3 spots where there seem so be a strong signal in the bedrock , which is mostly shale. I keep a rock hammer and chisel in my bag and have tried to dig some out. I feel like it's just a particularly hot spot of ground, but I dont know that it is, they seem vary localized. Any thoughts?
  2. Nick Zentner, Geologist CWU discussion on the Liberty WA placer & hardrock gold deposits.
  3. Nick Zentner, CWU visit inside Rob Repin’s mine in Liberty, Washington.
  4. Here a video link to the richest pocket gold mine in the gold country if not the state. Take note of the depressions from the wooden cross ties of ore cart tracks. A lot of barren quartz broke a lot of want to be mine owners but when they mined into a crossing the gold was in sheets. The contact was along the north south trending limestone formation. Later the drifts were used for passage ways between the cathouses and underground speak easies. Back in the 1950’s one of the sons of the then mine owner ran an ore cart off the tracks into a support timber. He discovered enough high graded gold buried under the foot of the timber to buy himself a new pick up truck and then some. Years later I would have the privilege of remodeling one of the above ground madam’s room, which was connected to this mine, into a bank manager’s office. The original cathouse door with glass window advertising, which led many a miner, logger & cowboy in the wrong direction, is still around back. I still own stock in that bank. Enjoy, few are alive that have ever got view inside of this historic mine.
  5. Stumbled onto this interesting article form another site...... Not sure where to post this but Steve can relocate it where he see's fit? https://www.westcoastplacer.com/paleochannel-hunting-guide/
  6. You have had a lot of success over the years. I imagine you have found some wonderfully large masses of gold. Think about each of those for a few moments, especially those in the lower 48. Does anything appear as a common feature of their locations? Surely not everything would fit the same mold, but was there anything present frequent enough to indicate one location might be a little bit more likely to yield big gold than another? Thanks
  7. The Mystery Formation of Extremely Rich Gold Veins Might Finally Be Solved MICHELLE STARR 24 MAY 2021 Gold, for all its wonderful uses, isn't hugely abundant in Earth's upper layers. For each ton of crust material, there's an estimated just 0.004 grams of the precious metal. Yet somehow, there are regions that contain "bonanza" abundances - hyper-enrichment, in the scientific parlance. How these gold veins form in time spans as short as days from hydrothermal systems that only contain trace amounts of the metal has been a geological mystery. It's one that now has an answer, from the most unlikely of clues: the separation and clumping of fat particles in soured milk. "Scientists have long known that gold deposits form when hot water flows through rocks, dissolving minute amounts of gold and concentrating it in cracks in the Earth's crust at levels invisible to the naked eye," geoscientists Anthony Williams-Jones and Duncan McLeish of McGill University in Canada stated in a Q&A. "In rare cases, the cracks are transformed into veins of solid gold centimetres thick. But how do fluids with such low concentrations of gold produce rare ultrahigh-grade gold deposits? Our findings solve the paradox of 'ultrahigh-grade' or 'bonanza' gold formation, which has frustrated scientists for over a century." Milk is an aqueous solution made up of several components, one of which is microscopic globules of fat. At the pH level of fresh milk - very close to neutral - these fat particles have a negative charge, which causes them to repel each other. The souring process involves bacteria in the milk converting lactose to lactic acid, lowering the pH level accordingly. This causes the surface charge on the fat particles to break down, and the fat particles separate from the milk serum and clump together with each other via coagulation, forming a sort-of gross decomposing milk fat jelly. Williams-Jones, McLeish and their colleagues found a similar process when using transmission electron microscopy to study gold deposits from the Brucejack Mine in British Columbia. This is one of the spots around the world where bonanza-grade mineralization can be found, up to 41,582 grams per ton. It's long been accepted that gold is transported by way of fluid through Earth's crust. However, in order to reach the abundances found in hyper-enrichment zones, previous studies suggested that the gold may have been dissolved in high concentrations in fluids containing chlorides or bisulfides, and transported and deposited that way. The other possibility is a colloidal solution, with solid nanoparticles of gold dispersed throughout hydrothermal and geothermal fluids. Since the gold nanoparticles hold a charge (like milk fat), they repel each other. When the charge breaks down, the gold particles clump together in a process similar to coagulation, known as flocculation. This has been indirectly demonstrated in the past; now, McLeish and colleagues have observed how it actually happens. "We produced the first evidence for gold colloid formation and flocculation in nature and the first images of small veins of gold colloid particles and their flocculated aggregates at the nano-scale," Williams-Jones and McLeish said. "These images document the process by which the cracks are filled with gold and, scaled up through the integration of millions of these small veins, reveal how bonanza veins are formed." For this process, the concentration of gold in the geothermal fluids only has to be a few parts per billion. It flocculates to form a jelly-like substance, which gets trapped in cracks in Earth's crust to form rich gold veins. This finding suggests that rich gold deposits may be more common than we thought, and may have occurred in several other contexts than previous estimates had allowed for. If other studies and further examination can back it up, the research could give us a new toolkit for understanding and locating gold deposits around the world. "We suspect that the colloidal processes that operated at Brucejack and other bonanza gold systems may also have operated to form more typical gold deposits. The challenge will be to find suitable material to test this hypothesis," Williams-Jones and McLeish said. "The next step will be to better understand the reasons why colloid formation and flocculation occurred on the scale observed and reconstruct the geological environment of these processes." The research has been published in PNAS.
  8. I'm interested in any information on how gold veins/ lode deposits become offset and how to attempt to predict the amount of offset. Anyone have information on this? Thanks, RiverRat
  9. Interesting! Will be useful when we eventually have a colony there.
  10. So what caused it to break away? Here is more on that theory. https://www.sciencemag.org/news/2021/03/remains-impact-created-moon-may-lie-deep-within-earth
  11. Hello, I was out this past weekend with my Gold Monster 1000. Here is a picture of a rock that I came across that had crystals and what I believe is black sand. I have come across black sand by it self and has done the same issue with my machine. Reading and sounding hot and then a blank sound as well. 1) I assume that you can find black sand like this still in a rock with Quartz. 2) Is is not true that usally when you find black sand you may end off finding gold as well because black sand and gold go together. here are four pictures of the rock. Allen
  12. I nabbed a pretty neat find the other day and I think it was sunbaker... Is it only a sunbaker if you saw it before you disturbed it or is it still a sunbaker if the rock that it's lodged in tells a sunbaker tale? Every dirt dog can tell what half of a float rock was in the ground and what half was face up. This is a rock with a nugget lodged in it that tells one of those sunbaker tales. Is it a sunbaker? -OR- Was it a sunbaker? -...OR- Is it not a sunbaker? It's wedged in there really good! I haven't tried to yank it out because it's so unique as a sort of specimen of a bedrock nugget trap. I've picked at it and got no movement, plus it survived getting tossed around in my pack on my hike. An interesting find too! One of those days, patch hunting a new area (this new area hasn't met the three nugget threshold). All I had in my pocket was trash and my nug jug only held my test nugget. But lo, another signal! Few and far between, they are out here. Giving the spot a boot scrape moves my target. Probably surface trash, a bullet. Gotta know. These 4 rocks. These 3. These 2. That one... it's not a hot rock? Turned in hand to reveal a little smooshie stuck in a crack! WHOA!!! My strongest theory is that this "specimen" is a remnant of the bedrock that trapped some gold, all the bedrock having been eroded away. The gold since washed down the hillside and into the main drainage, perhaps all the way into the basin... But hopefully it has only travelled just past where I stopped detecting for the day and I get a whopper bonanza another day! 😂 Yeah right.
  13. This is an interesting little story about Mineral Park, Arizona. It tells about a geologist who was told to find ore or be fired. There is a bit of history about fine gold recovery also. https://kdminer.com/news/2021/feb/06/mohave-county-geology-concentrate/
  14. I only went real nugget hunting one time in Stanton,Arizona in march 2002 because the late Charlie Wilson of Wilson metal detectors took us as guests for a week.I was using a Minelab gold machine he lent me that ran at 3 different freq.You had to choose one.I really envy you guys that get to do this in your area.I loved doing it even though I found no gold since i was new at this type of hunting.The owner of the Johnson mine even gave us permission to hunt his land which I thank him for.I met Chris Gholson and his father and they were fantastic people.
  15. As a beginner, I am trying to understand the details of the concept of nugget patch size. As I understand the concepts, a nugget field is defined as a general area that may contain gold. And a nugget patch is a small area within a nugget field that actually contains a group of gold nuggets. From what I have read so far, some patch hunters define a patch as any location that produces two or more nuggets within a distance of a few tens of yards. Is this a reasonable definition of a patch? This then implies that there is much barren space between the patches. I have several questions specifically on nugget patch size: 1) what is the range of sizes of actual nugget patches; 2) does the size vary depending on location (valley/gulley/gulch vs. mountain or hill); 3) does the patch size vary depending on geography (desert vs. a temperate area such as Sierra Nevada or Cascades); 4) is there a patch size relation to the age of the geology, that is, older rocks generally have larger patches? Any help in learning what to expect in the field would be appreciated.
  16. We took a day off from detecting and went out rockhounding for a day and came across these old workings , the old timers dug some deep cuts across the toes off some of the hills that ran down into the wash and found a couple small drift holes. the holes are about 10 foot deep with a couple small drift holes in each and the longest cut was around 50 to 60 yards long. there were dry washing holes that were just as deep and some were over 12 foot wide, some serious digging going on out there .
  17. I was out at a creek in central Illinois where I had map dowsed for gold . We got a few specks of color but hours of hard work for not much yellow. Then I noticed blue clay lumps in the creek gravels , looked around for the source, and eyeballed the upstream creek bank wall. It was a VEIN of blue clay like 200 feet by 15 feet up the wall from the creek. I tried to pan some out after working it for 10 minutes in my gold pan. No Gold. Other spots in Indiana that have blue clay, it is loaded with gold, altho the gold rich blue clay is usually under creek gravels, not in a vertical wall. On Treasurenet, they say blue clay gummed up sluices in Nevada was it? Somebody had it assayed and found it was rich in silver which also gives it the bluish color supposedly? Should I go back to the spot and get some samples to send in for mineral assays? How much clay per sample, ounces, pounds? Where is a good assayer for not too much green? Thanks, -Tom V, now in central Indiana gold country and retired early...out of the rat race finally
  18. Who do you know that has ever considered mining in Korea or a 'Korean Gold Rush' of a sort? The thought had never occurred to me until I read this brief article and then did a bit of research to find more links. I doubt there are any articles on nugget shooting in Korea. http://www.koreatimes.co.kr/www/opinion/2020/11/721_300053.html https://nanopdf.com/download/a-glimpse-of-life-at-the-gold-mines-royal-asiatic-society_pdf https://steemit.com/korea1960/@coped/gold-mining-in-south-korea-koryo-mines-part-1
  19. It was streaks of black sand on the beach. I hunted in the water with the Equinox 800 in Gold 1. I didn't dig any deep targets. The scoop would have black sand go across regular sand when I would shake the scoop. Everywhere I hunt is very mild. I don't know if this is affecting the depth here or not. My other beach waters would ground balance 0. This one was 14. The Gold Kruzer mineral was bouncing 2 - 3 bars. That's not to bad. I ran a super magnet thru the sand on the beach. Is this a lot of black sand on the magnet or not? I have seen sold black sand beaches in the upper peninsula of Michigan. They mine a lot iron in the UP.
  20. I have been searching for a quartz reef for 3 years in this area and I found it. 1200mm wide ,and goes for 5 meters on top covered in moss,it's on a side of a ridge that was formed on a fault ,pushed up. the area is also covered in loose quartz rocks ,some the size of a football. white,yellow and rusty. I have been using a minelab 5000 in the area for a year. only found silver/lead nuggets and a hundred bullets .No gold. my experience with a detector and prospecting is a beginner. within a 6 kilometer radius of this spot are 5 gold mines ,2 working . old iron ore mine, old lead mine,and a old diamond mine. excited ,I run the detector over the reef and near area for 3 days and got no signals.Zero hits.not even a bullet. complete nothing. cheers Paul
  21. hi guys and gals i have been interested in gold for years but so far no luck have read heaps of books ect dont need x marks the spot but some advice on how you guys have found your bits and bobs im hoping to retire next year and chase some gold up at talbot in victoria an old friend has just bought a home there thanking you all happy hunting
  22. Most of us don't have a geology degree but it would probably help when we are out detecting and doing research. Geology has a language laced with time periods that I've never taken the time to learn so this is going to be a ramble. This is a chart which can help us to know history and geology and place the events which formed our detecting areas into the puzzle. We can then use plate tectonics to help us know how our region got to where it is today and understand the mountains and folds in the earth's crust. How do we tell the difference between geologic ages? http://www.stratigraphy.org/index.php/ics-chart-timescale One article I read said: On Earth, gold finally reached us some 200 million years after the formation of the planet when meteorites packed with gold and other metals bombarded its surface. During the formation of Earth, molten iron sank to its centre to make the core. This took with it the vast majority of the planet’s precious metals — such as gold and platinum. In fact, there are enough precious metals in the core to cover the entire surface of Earth with a four-metre thick layer. https://www.zmescience.com/science/how-gold-is-made-science-064654/ And then came the plates! Tectonic Plates’ Patterns Revealed https://www.livescience.com/38819-plate-tectonics-patterns.html Can someone that knows this stuff make it more simple? haha I mean where did the gold in Arizona, Nevada, California, Australia and New Zealand come from in a geological time frame (the beginning we know from the star or stars) and then the weathering has come into play. I guess every local Mining College has people working on that so that professional miners are more successful than the rest of us. Clay, are you reading this? The topic is too big so old timers learned from each other and passed along their knowledge of specific deposits and veins. The USGS and satellite imagery are probably now the tools in use and maybe we as detectorists could get a drone? Mitchel
  23. I keep hearing the term "Favorable Geology" on here. What geologic indicators do you look for while detecting for gold.
  24. Do you ever question yourself, am I in an area that even has gold? It isn't always true, but if you see these indicators together you are probably not far from gold.
  25. Worth the watch, good information for you Detector Prospectors! Lesson 1 - Where Does Gold Come From? Lesson 2 - How To Find Lode Gold Deposits
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