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Geowizard

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Everything posted by Geowizard

  1. Geowizard

    Aa Spectrometer Assay

    That's the advantage of the AA spectrometer. - Geowizard
  2. Geowizard

    Why Are Dredge Sluices So Short?

    With reference to Chris's point about water speed. - Geowizard
  3. Geowizard

    Why Are Dredge Sluices So Short?

    The bolt doesn't reduce the suction volume. - Geowizard
  4. Geowizard

    Arizona Rocks !

    I have lived here in Cochise for the past 7 years. I'm about 10 miles from Gleeson and Courtland. You might want to give a call to the owners of the turquoise mine before you go. It's Sleeping Beauty Turquoise in Globe, AZ. Unfortunately, Arizona has become a mecca for tourists looking for souvenirs. People stop in Pearce and walk into other peoples yards picking up items and loading them into their cars. Might want to stop at the Pearce post-office and talk to the post-master if you want a real ear full. Pearce is next to the Commonweath gold and silver mine i.e. on Ghost Town Trail - where you leave Hwy 191 on the way to Gleeson - Courtland. The town of pearce is there because of the mine. The townspeople voted to zone the area "non-mining" . Anyway, a Canadian company is exploring with an eye toward mining next to the grade school. - Geowizard
  5. Geowizard

    Gold Deposit Geology

    The paper Chris cited is a "keeper". I have posted links to it on other forums in the past year. Forums and websites like Chris's website become a repository of knowledge over time. The AMDS forum and Alaska Gold Forum to name a couple are searchable. They stand as knowledge bases for all who wish to learn more about this fascinating subject! - Geowizard
  6. The only problem I can see is they don't allow mining on the beach. Over recent years, there have been as anyone can imagine, thousands of ideas, mostly on paper of "how" to mine the nice clean sandy sea floor. I have not been out on the sea floor but I have listened to those that have. There are big rocks, and even rusted car bodies, etc. out there. Cost of getting equipment to Nome is an issue. Yes, given all the money you need, anything is possible! Heavy equipment is barged in from ports like Seattle or Seward. The logistics involve planning that precedes shipping by as much as a year. There is risk. Unfortunately, weather plays a big part in mining at Nome. Even the transportation by airline is subject to weather conditions. An example, and it's the reason I pulled out of Nome, is when your scheduled flight attempts to land and can't. It's diverted to Kotzebue and then returns to Anchorage. In Anchorage, you find a long line at the ticket counter. The next available seat is two weeks later! So, that's how it goes. The risk of not getting the job done because of weather affecting getting people in and out and the affect on mining on the Bering Sea. - Geowizard
  7. Excellent thread, Chris! Isn't optimism what drives us all!! Subconciously we "know" something... We "know" gold WAS $about $20 USD an ounce. That was because there were 20 dollar gold pieces in circulation as currency. Gold floated under US Government control to $35. an ounce until President Nixon demonetized gold prices circa 1973. Gold entered the "free market" system and was/is traded as a commodity along with silver. We "know" gold has increased in value! Why? Gold is directly related to "fundamentals". The fundamentals are things like rampant taxing and spending by sovereign entities i.e. all of them! When govenments become financially unstable - "bankrupt", then "private entities" begin to find places to put their cash. Because cash is devalued by inflation and printing presses, those two things make cash worth less and almost worthless. My forecast is that gold will be affected by trading - but you can't print gold. WE collectively have to MINE it. As a currency or as a commodity, gold will remain in high demand! The fundamentals are not changing. The only way is up. I envision $2000 by October. (possibly more!) - Geowizard
  8. Kyle has provided an interesting example which represents an approach to entering into a reasonably serious attempt at mining. With respect to his quest, I think it offers many possible areas for discussion. Topics might include: Mining resources needed for a mining operation. Background experience. Wash plant types and applications. Cleanup process. Cost analysis. Closing the loop on cash flow. Placing the cart before the horse i.e. equipment before the mining model. Risk management in mining. Labor management in mining. Just some suggested topics... - Geowizard
  9. In the process of managing a large placer mine, one important detail should be considered... Background: In my travels to many different placer and hardrock mining operations, I have noticed one common denominator. The common denominator is "run-out equipment", left and abandoned. MGT 101: Most of my life I worked a 9-5 and... went to night school. Business was always an ambition for me. Now, after having managed other businesses; i.e.a restaurant, a part 135 air charter business, a flight training school, and others, they had "equipment" that had a lifetime. The lifetime required the equipment to be retired and that defined the end of service for the equipment. In Management 101, it's part of the curriculum to learn about the process of amortizing equipment! So, if we take a used Bobcat loader that we bought for $20,000 and it has 5,000 hours remaining until replacement, there are two considerations. There is the cost of fuel and preventive maintenance and saving for replacement of the machine. It may not seem like a big deal until the machine runs it's final hour. No, it doesn't probably just completely shut down, but realisticly, it has worked as long as can be expected and the cost of maintenance and issues with reliability are at the "breaking" point. So, the machine is at the 10,000 hour mark and it gets replaced. If we saved $4.00 per operating hour for the 5000 hours we used the machine, we have banked $20,000 for a slightly used, refurbished replacement. - Geowizard
  10. Geowizard

    Camp Ground Closed

    Can I prospect in or around a National Forest campground? - Geowizard
  11. Geowizard

    Camp Ground Closed

    It's a ways from California. But the Forest Service, here, has began fencing off the campgrounds. - Geowizard
  12. Geowizard

    Aa Spectrometer Assay

    It works as well now as it did then. - Geowizard
  13. Geowizard

    Citrine ? Aragonite? Your Opinion ...

    Dick, I have a Keene acid test kit from WAY back. Citrine is Quartz SiO4 and would not be affected by hydrochloric acid. Aragonite is a carbonate and would definitely react with the expected fizzing. This is just a field test. Is it coated? Coated with what? Is it a mix of something? If so, what? the questions continue... Gemologists use a hand-held gem scope or spectroscope that uses incoming light to make essentially a rainbow of different colors with interference patterns. Gemstones all have identifying finger prints according to the unique spectrum. My wife used one when she was in the gemstone biz. In this case, it doesn't look like any sizeable stones are available for spectroscopic viewing. Thirdly is elemental analysis using an AA spectrometer. It is costly, but an assay lab can do a 30 plus elemental sweep and help define more exactly what you have. This involves destruction of the sample though! - Geowizard
  14. Geowizard

    Why Are Dredge Sluices So Short?

    If I understand the question, it's the issue of catching fine gold and the perception that a "long sluice" is the solution. - Geowizard
  15. Geowizard

    Geophysics

    It's "public" information too! - Geowizard
  16. Geowizard

    Going Detecting All Summer Long!

    Sounds like lots of fun! - Geowizard
  17. Geowizard

    Small Scale Hard Rock Mining

    Blasting can be contracted. - Geowizard
  18. I corrected the calculation. Thanks steve62 for pointing out my error! A spreadsheet reduces the time to recalculate and reduces the possible errors in recalculation! Like my example! Every gold miner is working in a world fraught with variables. What happens if the grade goes down? What happens if I increase capacity? What about the purity of the gold? Unlike TV, it isn't 100 percent pure! One big variable is "recovery". What if my recovery is low because I'm running too much water or the matting isn't catching all of the gold? Finally, the price of gold. Recently gold has been "under pressure" i.e. the price is falling. Managing the variables that are under our control makes managing a mine an interesting challenge. Experience shows that each of the variables require independent study and understanding. On the cost side, fuel and labor become direct costs. Many miners fail to plan on equipment replacement and when the equipment finally reaches end-of-life, there isn't sufficient capital set aside for the replacement cost. I refer to it as paying myself for the use of my equipment. - Geowizard
  19. Geowizard

    No Notice of Intent

    With reference to operating in the National Forest System, The District Rangers are given discretion to decide what "special resource management" decision making applies to their Districts. - Geowizard
  20. Geowizard

    New Blm Fee's

    There's plenty of new ground. I dropped everything in the CONUS except a 40 acre silver property. So, you can claim all the ground you can afford. But, you can't mine it. Panning isn't exactly what can be called mining. It's a great hobby but hard work. Permitting is getting harder to obtain. On USFS domain the permitting can take 6 years. BLM is less, then there's the bonding requirements and reclamation. BLM is amping up inspections and miners are subject to fines if things aren't per the permit. etc. Plenty of other places to play! In 2010, I moved my mining program to Alaska. - Geowizard
  21. Kyle, The first thing I would suggest is a sharp pencil. Better yet is access to a spreadsheet program like MS Excel. I can provide spreadsheets if you need a template to start with. Business, in general of any kind involves a "Business Model". The Business Model is reflected in a spreadsheet in the form of a cost analysis and a profit/loss analysis. Mining gold or anything else involves attention to detail. Do a pre-feasibility analysis. Take your proposition for instance: You didn't mention the depth of the gold in the gravel. You mentioned 8000 ounces. Is that divided over the 5000 acres? If so, then here's the way it pencils out... One acre = 43,560 square feet = 4840 square yards and let us assume to start, the gravel is 3 feet deep. So, that's 4840 cubic yards per acre. You have 5000 acres = 24,200,000 cubic yards of material to process. Given 8000 ounces of gold, the grade works out to 8000 ounces / 24,200,000 cubic yards = one ounce per 3000 cubic yards approximately. A prefeasibility look at the grade would indicate a very low grade placer that would be sub-economic. I have a mine with a cutoff grade of one ounce per 100 cubic yards. - Geowizard
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