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clay

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Everything posted by clay

  1. clay

    Meteroite in situ

    Trolling – (verb), as it relates to internet, is the deliberate act, (by a Troll – noun or adjective), of making random unsolicited and/or controversial comments on various internet forums with the intent to provoke an emotional knee jerk reaction from unsuspecting readers to engage in a fight or argument. Trolling on-line forums as described above is actually analogous to the fishing technique of “trolling”, where colorful baits and lures are pulled behind a slow moving boat, often with multiple fishing lines, covering a large bodies of water, such as a large lake or the ocean. The trolling lures attract unsuspecting fish, intriguing them with the way they move through the water, thus enticing these foolish fish to “take the bait”. Not unlike unsuspecting internet victims, once hooked, the fish are reeled in for the catch before they realize they have been duped by the Troll/Fisherman. The thing about trolls is they feed on your reactions. If you don't respond they become a failure as a troll. We all want trolls to fail but as humans we just can't help responding to stupidity and false claims. The troll requires a willing victim to succeed as a troll. If you don't feed the troll it will go away and taunt people on a baking forum, a doll collecting group or a bicycling blog. You see the troll could care less what the subject is, the whole intent is to get a reaction. You guys are great troll food - you always react. It's like getting monkeys to push the button for a treat. You are the monkey and the troll gets the treat. If this is entertaining to you please keep feeding your troll. If you want to stop the stupidity ... Don't feed the troll. Yeah it's that simple.
  2. I'd watch your back Rocky. Bob's named your stone and thinks it's a girl. He's getting a little over protective if you know what I mean. Now he's made up some story about how he won't be around because he's bowing fish for a few days. I'm thinking Bob might just show up in your neck of the woods looking for "his precious". Just a heads up.
  3. Micron grinds are much finer than your typical iron oxide/aluminum mixtures. Same stuff just a lot finer material = higher heat, quicker reaction, less material needed for the job. Most Thermite is a simple mix of iron oxide powder and aluminum powder but Cadweld is copper oxide/aluminum. I don't know if that would affect the slag product composition. In theory Thermite shouldn't leave any residue but a little aluminum oxide but real life teaches us otherwise. A lot of different metal oxides mixed with pure finely divided metals can produce a thermite reaction but I think Cadweld is the only common commercial Thermite to use copper oxide instead of iron oxide. Something to think about if Rocky can find an XRF with a usable spectrum.
  4. Just to confuse the issue. Disko Island native iron in basalt. Native iron is rare and is only mined commercially in Greenland but there are other occurrences - including in the Labrador Trough just a few hundred miles north of Cape Cod. The red blobs resemble the color of micron mixed Thermite often used today due to higher energy release with less material. It could also be fused refractory clay. Or it could be slag. Occams razor and Bob say slag. ... But it's fun to speculate.
  5. The fact that portions of it were more resistant to weathering in what appears to be layers may indicate a sedimentary deposit that has been subject to metamorphism in the past. Being that it's magnetic the odds are good that iron is present in the rock. It looks like tumbled basalt with native iron. Very few localities on Earth have native iron of terrestrial origin. These native occurrences are along natural smelting zones, where magma or lava has come in direct contact with carbonaceous sedimentary rocks. In such smelting zones, reducing conditions are created, and metallic iron can crystallize. Of course it has a meteoric origin like every other rock on the planet but I doubt this one is recent enough to be considered a "meteorite" by whatever the age standards for meteorites are this year. The red spot appears to be paint? It also appears similar to the Asian black "jade" with "silver" but I'm assuming this was found in a natural setting. With no streak, hardness or fracture testing it's anybody's guess. Maybe Venusian jellybeans? Party on!
  6. Boy you have become a real party pooper Bob. I've welded with Thermite so this is not news for me but the new guy didn't know that. If you can't mess with the new guys why even post? I've been meaning to ask. What "tools" does a New Mexico bush doctor use? p.s. You don't have to answer that last one, rhetorical question. I've operated "in the bush" for many years in New Mexico. Good to have you back.
  7. Take a torch to it Rocky. If it's thermite you will know rather quickly. p.s. Have someone with you to help lead you back to your house. If it is thermite you will be blind and someone will have to put out the fire.
  8. clay

    LiDAR maps and nugget shooting

    Thanks for the reply PG-Prospecting. I haven't had much luck with SAGA except from the command line. SAGA runs on R code just like GRASS so it is possible to speed things up bypassing the clunky GUI. If I've got to use R for a process I'm more familiar and confident in GRASS. Since QGIS has achieved high integration with GRASS it's pretty easy to switch to GRASS command line while still having the advantages of a stable working platform. Most GRASS functions are available directly through QGIS without any need to use code. You could install an older version of QGIS that supports the las toolbox. QGIS can run multiple versions on most operating systems. I run several versions of QGIS just so I can use different tool sets on different projects. Each version has it's own strengths and weaknesses. The artifacts are the thin parallel scan lines running north/south, the terracing on steep slopes and the lack of ground truth extraction. All that is why most people would prefer processed LIDAR instead of raw cloud data. The real advantage to LIDAR in mapping is not so much in a bumped resolution but in it's true 3D location data. Flat maps with higher surface resolution are nice but I'm of the opinion that giving a more human point of view is the ultimate reason LIDAR will be adopted on a level like aerial photography is now. 3D interactive viewing is still in it's infancy but people are adopting it as soon as it's available. See my post above about Google Earth and Apple Maps as an example. Hillshading is pretty much necessary when presenting flat terrain maps. I like using a Northwest Angle with a medium Azimuth for flat presentation. Hillshade can be problematic when presenting 3D interactive maps. False shadows can look odd from some angles. I'm learning to use a lighter hand on the hillshade when creating 3D interactives but I've not yet been entirely happy with my results. I've employed real time relational shading on some 3D interactives and that looks really good but for the internet and your average home computer the size and processing requirements are prohibitive. If you are creating these maps for your own use consider looking into D3.js. It can do some pretty cool 3D interactive processing with minimal processor load. Your maps could provide a lot more visual information with a 3D interactive component.
  9. clay

    LiDAR maps and nugget shooting

    Google just uses regular 30 meter resolution DEMs Chris - no LIDAR. The "3D" effect on buildings and trees is a result of photogrammetry extrapolation from off angle aerial photos. That's why the trees look so funky and buildings often look "wavy". Apple just recently revealed they have spent the last 4 years doing ground level high resolution LIDAR scans and 3D photography from surface vehicles. They have now created a true 3D LIDAR based interactive map of the United States. I've seen the results and they are truly amazing. Google's 3D mapping days are numbered, when you see this new technology you will wonder why you thought Google 3D was cool.
  10. clay

    LiDAR maps and nugget shooting

    Looks like raw data. Have you tried normalizing the ground elevation for ground truth and using a tensioned spline to get rid of all those artifacts? Have you tried SPDLib or Grass to convert to DTMs? QGIS has a las toolbox but I haven't tried it yet. Interesting shading. Do you find using slope for shading gives you better information? Looks almost metallic. I'm glad you are getting use out of this cloud data. There is still a lot of resistance in the industry to government LIDAR data. Mining companies seem to prefer private aerial scans of particular areas with high density ground control. Good stuff to work with but really expensive. Keep us updated on your results, I'd be interested to see what you discover on the ground.
  11. What a great idea. Think of the depth! You could sit at home and beep nuggets on the mountain. The first real LRL. Keep a few fire extinguishers handy!
  12. clay

    Claudette mill story

    Please share your experiences with the Claudette mill Herb. I'm looking forward to hearing about old style mining and milling. Whine if you want, you've earned the right.
  13. clay

    Hand held GPS

    Something not often considered when this subject comes up is how the GPS is going to be used. If you are like me you will want to be able to operate the GPS with one hand while on the move with equipment. That pretty much limits me to the eTrex style handsets. Phones and the newer large screen GPS unit designs require two hands to operate. Another thing to consider is the new style units with larger screens, cameras, phone, touchscreen, wireless, bluetooth etc. use a lot more battery power. Most of the larger screen GPS/Phones won't last more than a day before they have to be recharged or have the batteries replaced. My eTrex lasts about 2-3 days on a set of fresh batteries and replacement of dead batteries is a two minute job instead of several hours tied to a power source (not all GPS can use off the shelf batteries). The eTrex stays in the field as long as you have fresh batteries. Very useful if you tend towards multi day expeditions. The eTrex has a great bright backlit and reflective screen (transflective) for reading in bright light. Larger GPS/Phone screens can't use that technology but they are getting better. Pay close attention to the screen technology. A GPS screen that looks great in the store but you can't read in sunlight isn't very functional in the field. After all else is considered get a Garmin no matter which model appeals to you. Garmin is the only brand that doesn't play the propriety file format game. This leaves you free to download your stored GPS data into other applications or GPS units no matter how old the data is. Garmin tend to make a better, more reliable, unit with some notable exceptions. I have two eTrex units that are more than 10 years old and working as well as new. I used to own and test quite a few GPS units. It's been a few years since I've tested new units so things may have changed but I found the two most expensive brands actually performed poorly, compared to my garmin units, in actual locational and tracking accuracy. A high price tag probably won't buy you a better unit, they all pretty much use the same GPS chip so antenna, case design and software have more influence on locational precision and accuracy than internal hardware does.
  14. It is indeed man made glass. It could be from a glass foundry but more commonly these large pieces are from commercial metal smelting operations. The silica sand used in the smelt are skimmed off the hot melt and discarded as large glass blobs. As the glass cools it tends to shatter. The white balls you see in the glass are spherulites formed from the slow cooling of the large mass of glass. It could have been found near a smelting operation in Montana or a lead smelting operation in Missouri. It all looks very much alike after they have cooled.
  15. clay

    Beryl Score.

    Schorl is an iron rich variety of Tourmaline. Tourmaline is Sodium Aluminum Boron Silicate. The crystal Homefire found very much resembles Tourmaline. Beryl is Beryllium Aluminum Silicate. I have never even heard there might be black Beryl but there is quite a bit of gray massive, non crystalline, material due to impurities and inclusions of non-beryl material. Both Beryl and Tourmaline are cyclosilcates but they are very different minerals. Their crystal structures are entirely different, Beryl crystallizes in the Hexagonal system and Tourmaline crystallizes in the Trigonal system. If you look at the crystal forms and pictures at those mineral links I think you will see that Homefire's crystal doesn't look anything like a Beryl crystal but it does very much appear to be Schorl Tourmaline.
  16. clay

    Happy Birthday Au Seeker

    Happy Birthday Skip! Thanks for all your years of dedication and work for prospectors. You are the genuine article. Wishing you many more. Barry
  17. clay

    Near UV Flash Light

    Your eyes can't see in the ultraviolet range Jim so they aren't trying to focus in that range. If your eyes were really trying to focus on ultraviolet you would be sick during the daylight when the UV content is much higher than from any handheld battery powered light. UV is what makes the sunlight feel "warm" and what burns our skin to red or brown if we spend more than a few minutes a day exposed to that UV source. Powerful stuff that UV. The glow you see with ultraviolet lighting in the dark is fluorescence in the visible range caused by the property of some substances absorbing light of short wavelength and emitting light of longer wavelength. The light you see as a colored glow is visible light - not UV. Your eyes can focus as easily on the fluorescence as they can any other visible object. Your eyes can be damaged by direct UV exposure. Since you can't see UV light you might find yourself casually looking at your UV light source while it is busy burning out your vision receptors. UV exposure is why people go blind from staring at the sun. The effect is magnified when using UV lights in the dark. Your pupils are fully dilated and don't provide any protection from UV burns as they would in sunshine. Avoid looking into your UV light source. The shorter the wavelength the more likely it is to cause radiation burns to your eyes. If there are a lot of reflective surfaces where you are viewing wear UV protected eye wear even if you do avoid looking at the light source. UV reflects just as well as the visible light we are more used to even though it's invisible to our eyes. It sounds like you are experiencing radiation burns to your retina. Your eyes can recover, if the exposure isn't too great, just as eventually your burned retina recovers normal vision after you look at the sun. The more the exposure the greater the chance of permanent vision damage. Check out the symptoms of Photokeratitis and I think you may recognize some of the problems you have experienced.
  18. clay

    Holbrook....again

    I've often wondered about how people hunt Holbrook Dave. Do you get permission from the property owners? Has anyone ever been run off or questioned? I know the area well but I've never been bold enough to work private property without permission. I know the railroad will run you off for working the ROW but I imagine with the clinkers and debris that would be pretty unproductive. Just curious how people handle the situation.
  19. clay

    UPGRADE in 3...2...1

    No bunnies or poo storms. Not working here.
  20. clay

    FOREST CLOSURES

    On BLM and State managed lands in central and northern Arizona you can still run gas motors. In southeast Arizona there is a stage II restriction that prohibits gas motors. Southern Arizona restrictions: _________________________________________________________________ Safford Field Office, Arizona BLM at Stage II from 2018 May 09 midnight until rescinded FIRE PREVENTION ORDER # AZ-400-18-2 STAGE 2 FIRE RESTRICTIONS DUE TO HIGH FIRE DANGER BUREAU OF LAND MANAGEMENT, GILA DISTRICT Pursuant to 43 Code of Federal Regulations (CFR) 9212.2, the following acts are prohibited on all lands administered by the Bureau of Land Management in the following counties: Apache, Navajo, Cochise, Gila, Graham, Greenlee, Pima, Pinal, and Santa Cruz. This restriction includes the Gila District encompassing the Tucson Field Office and Safford Field Office. These restrictions will become effective at 12:00 a.m., PST, May 8th, 2018. They will remain in effect until rescinded or revoked. Stage 2: The following acts are prohibited until further notice: 1. Building maintaining, attending, or using a fire, campfire, charcoal, coal, or wood stove including fires in developed campgrounds or improved sites. 2. Smoking, except within an enclosed vehicle or building. 3. Discharging a firearm, including target shooting, except while engaged in a lawful hunt pursuant to state, federal or tribal laws and regulations 4. The following mechanical and industrial activities are prohibited. a. Welding or metal grinding activities b. Operating acetylene or other torches with open flame. c. Using an explosive and/or explosive device. Fireworks, tracer ammunition, and exploding targets are always prohibited year-round on federal lands. Stage 2 Exemptions: 1. Persons with a written permit that specifically authorizes the otherwise prohibited act. 2. Persons using a device fueled solely by liquid petroleum or LPG fuels that can be turned on and off. Such devices can only be used in an area that is barren or cleared of all overhead and surrounding flammable materials within 3 feet of the device. 3. Operating generators or internal combustion engine with an approved spark arresting device within an enclosed vehicle or building or in an area that is barren or cleared of all overhead and surrounding flammable materials within 3 feet of the generator/engine. 4. Operating motorized vehicles on designated roads so long as you park in an area devoid of vegetation within 10 feet of the roadway. 5. Any Federal, State, or local officer, or member of an organized rescue or firefighting force or other authorized personnel in the performance of an official duty. An exemption does not absolve an individual or organization from liability or responsibility for any fire started by the exempted activity. Violation of this order is prohibited by the provisions of the regulations cited. Under 43 CFR 9212.4, any violation is subject to punishment by a fine of not more than $1,000 or imprisonment of not more than 12 months, or both. Information regarding these fire restrictions may be obtained by calling (520) 258-7200. _________________________________________________________________ The rest of the State: _________________________________________________________________ Hassayampa Field Office, Arizona BLM at Stage I from 2018 Apr 20 8 a.m. until rescinded Beginning April 20 campfire and smoking restrictions will be implemented on state lands and federally managed public lands in central and western Arizona which includes Yavapai, Maricopa, La Paz Yuma, Mohave and Gila counties, as well as portions of Pinal county. Restrictions will be in effect and enforced on Bureau of Land Management Phoenix and Colorado River Districts the Prescott National Forest, the Tonto National Forest , and the Arizona Department of Forestry and Fire Management for state lands, as well as Mohave County Park lands. Weather and fire conditions as well as localized closures and restrictions are subject to change. Beginning April 20, 2018 and until rescinded, the following are prohibited: • Building, maintaining, attending, or using a fire, campfire, charcoal, coal, or wood stove other than in a developed campsite or picnic area where grills are provided. • Smoking, except within an enclosed vehicle or building, a developed recreation site/improved site or while stopped in an area at least three feet in diameter that is barren or cleared of all flammable materials. • Discharging a firearm except while engaged in a lawful hunt pursuant to state, federal, or tribal laws and regulations. Fireworks and exploding targets are always prohibited year-round on federal and state lands. Violation of restrictions on federal lands is punishable as a Class B misdemeanor, by fine, imprisonment or both. Violators also may be held personally responsible for reimbursement of fire suppression costs. Cigarettes should never be thrown out the window of a vehicle. Instead, ashtrays should be used in order to prevent wildfires. Always practice Leave No Trace principles. Fire conditions as well as localized closures and restrictions are subject to change. Because tribal, federal, state, and local mandates are different, they may have some differences in their restriction notices. For a more detailed explanation concerning agency restrictions and fire information in general, please contact the nearest land management agency or visit Wildland Fire AZ _________________________________________________________________ Link to all BLM and State fire closures.
  21. clay

    Bucket Dredge Pics - 1940's to 1960's

    That's the Fairplay dredge delivered by Yuba Industries to the South Park Dredging Company just southeast of Fairplay Colorado in 1941. If you have ever been there you know how large that lower dredge field became. There were several smaller dredges running upstream of Fairplay, the best known being the much smaller Snowstorm dredge which is still mostly intact and in place except for it's long missing 12 yard walking dragline.
  22. Very nicely stated Jim and very much on point. Often these public comment periods are used to vent or state a point of view. Sadly, although all comments are collated, only comments that rely on a point of law, right or administrative requirement will have the power to realign the agencies plans. Lucky for us we have perceptive and eloquent people like Jim to submit comments that hit on all three of the valid objections. I think Jim may have sent this one back to their drawing board. The same tactic shut down a similar TMP by the Forest Service in southern Arizona a few years back. Luckily the unmentioned option is always the fallback to the base option which amounts to "no change". I can go with that. Thanks again Jim, I wish there were more of you out there.
  23. clay

    Bucket Dredge Pics - 1940's to 1960's

    The dredge used in San Domingo was the Geraldine dryland dredge manufactured by Yuba Industries and delivered in 1961. She was named after the owner of United Placers Industries, the company who ordered the dredge from Yuba Industries. The Geraldine was also used on the lower LSD west of the highway after mining on the upper LSD. There is some evidence she might have been used on the Hanson placer (still being mined) and Malibu placer both just east of Hwy 60. The Geraldine was much bigger than the processing equipment shown in that picture. The picture doesn't show the actual dredge. If you have ever been on the lower LSD those 40 foot cliffs along the wash were a result of the Geraldine dredging. Obviously not something the pictured machine could have mined or processed. The Geraldine was BIG. Yuba industries is still manufacturing and rebuilding dredges when needed. Dredge 21 out of Marysville is retired now but Yuba Industries rebuilt Dredge 17 and is still actively dredging in California. About 7000 yards a day. They use it to test new mining equipment designs. I don't think there has been any point in California mining history when a dredge hasn't been operating on the major rivers since they were invented. Yuba Industries was the world leader in large dredge design and construction for nearly 100 years. The older dryland dragline dredges were moved either by powered or passive tracks. Newer dryland dredges are the "walking" design and and the "feet" are retracted while the dredge is mining. I've been trying to track down the Geraldine for years. Equipment of her size and quality doesn't just go away. I suspect a modified version of the original Geraldine is now working in White Oaks, New Mexico. The dragline/trommel they are using there looks big enough to be the Geraldine. It's hard to get a confirmation on that because private gold mining operations permitted as "sand and gravel" construction material mines aren't inclined to share their operating details with outsiders. If you have any doubt about that just try to get a statement from the Hanson "sand and gravel" operation at the mouth of San Domingo wash on Hwy 60. 😉
  24. Angel Poop Adam? Nice collection! 🔜 ↩️ 🛃 What the eLL is an Emoji?? 💯 ✏️ 💲 🐜 😩 👽 I had a friend who served in the pacific in WWII. He called the Japanese "those slanty eyed former enemies of mine". He had problems letting things go. 👵 So is this Emoji thing... 👀 ...Is this more Japanese retribution? 👞 The guy with the personal problem with Japanese is dead now but he used to be a big shot in the Scottsdale school system. 🐂 🐖 🐳 I think Adam might have gotten his Angel poop from my backyard stash. Is that the right Emoji? Nice! 💘
  25. clay

    Mineral Tresspass

    Thanks for the first hand info. I'm curious, what federal law was broken?
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