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Paleomanjim

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Paleomanjim last won the day on October 18 2013

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  1. What size is it? I have one I found in the Great Basin, perfectly round and made from hard limestone. Others have found similar stone balls and they are generally called game balls, although no one really knows what they were used for. Central America has hundreds of large perfectly round stone balls, some the size of a VW! They are also a mystery. I suspect the ball you have does not have a hardness greater than 7, around the hardness of flint or iron and should be able to be scratched with a diamond scribe. I would not take a hammer to it, what would be the point? It is an artifact.
  2. Decided to try to make an EPP foamy, it actually fly's!
  3. I'm into RC flying too, mostly 3D slow stuff. But check this out, 468 mph on a glider! ....jim
  4. I am not a meteorite expert, but I have given my opinion on this forum several times to folks showing pictures of meteorites and asking for an opinion. Usually these folks are excited and think they have a space rock. Thats a good thing regardless of what it is. Even when the picture appears to be an ordinary rock I try not to crush their enthusiasm. Instead of saying "Not a meteorite" with no explanation (which I have seen on this forum many times) I usually tell them how to do further testing to find out for themselves. My field of expertise is flintknapping and I receive questions and comme
  5. Such arrogance and a know it all attitude. For newbies or beginners out there all I can say is that there are other helpful folks on this forum who will try to help. It takes all kinds I guess.....
  6. Great way to spread the interest in meteorites. Beginners with questions will really be encouraged to ask after reading this thread......
  7. Well stated and I agree 100%. To me a condescending answer is worse than no reply at all. If you don't like the question don't answer it. But if you do answer it be respectful and helpful. Arrogance and a KIA attitude just tend to piss people off. The idea is to promote the hobby, not turn people off
  8. Terminal velocity is dependent primarily on the density of the object and secondarily on the shape. A human has a density of 1.0 and he/she can change their velocity a very small percent by altering the position of their body to increase or decrease drag. Typical human falling velocity is 122 mph. By diving straight down with arms tucked in 200 mph can be reached. A 30-06 bullet falls at 200 mph as well. An iron meteorite should fall around the same speed as the bullet, so around 200 mph. Sikhote Alin was much faster because breakup occurred at a very low altitude, so there are exceptions...
  9. Yep. the math looks good to me! 10 billion people on this planet, half of them carrying cell phones with video and cameras. Dozens of meteorites striking the surface of the earth in that size range every day. Some have fallen through roofs, killing animals, and even hitting people. The odds of something like this being recorded are relative to the number of events but also the number of videos being shot around the world. Viewed from that perspective it seems plausible. I remember the Russian meteorite event last year and most folks stating the hole in the lake was a fake, even though small fr
  10. I thought so at first, but after watching the video I believe it is probably legit based on their demeanor and the actual video footage. The frame by frame shots show greater spread or separation as it approaches the camera as would be expected and the velocity of the object seems about right. In todays world with cameras and videos filming everything even very rare events are bound to get captured occasionally by someone......
  11. Thanks Fred. I have the Garrett ATX and have found both chondrites and irons with it. On the very small Franconia irons it will detect almost as small as a Gold bug 2, but the GB2 does have a slight edge. On a recent trip using the ATX I lost the signal trying to locate a tiny iron. Apparently as I dug for it I buried it a bit deeper. My friend using his GB2 came over and located it quite easily for me. That sort of proved to me that the GB2 was the better choice for the tiny irons. Also, the GB2 seems more sensitive on the chondrites from some testing I did. On the other hand, for deep stuff
  12. Thanks everyone, the different points of view are good things to consider. I think it more or less boils down to ground conditions, using magnet canes for barren ground and metal detectors on areas with desert pavement. Another thing that has me wondering though is what type of ground is conducive to preserving meteorites on or near the surface? Some dry lake beds are because they are subject to freeze thaw mechanical action or wind erosion, but a few seem to have more deposition than erosion and are devoid of surface rocks. Gold Basin and Franconia strewn fields provide good examples of what
  13. I've been hunting meteorites a few years now and have a couple hundred finds, all of them from known strewn fields and dry lake beds. Last year I made 3 trips in search of cold finds in the deserts near Las Vegas, one using a metal detector and the other 2 using a magnet stick. Most of the dry lake beds in the south west are known to have had meteorite finds, some having hundreds from the same lake bed. Arizona has at least 4 strewn fields that I know of. The point being that there must remain a LOT of meteorites out there waiting to be discovered. So I am wondering if folks out there who have
  14. Mystery solved! I brought it out into the sunlight this afternoon and thought I saw something written on the inside. Sure enough....Titanium, more or less worthless! Anyway, thanks for all the help from everyone ID'ing this.....jim edit....I weighed the heart pendant. It is 2 grams heavier than a quarter, with similar surface area and quite a bit thinner. Probably silver or white gold....or at least much denser than copper
  15. Thanks folks. Here's a couple pics of Wednesdays finds. Thursday was unproductive. I went to Aliso Creek beach which is usually packed with sun bathers in the summer. After 30 minutes of detecting no coins, but lots of junk iron hits. I think this beach has been hunted out. I walked north up the beach but the emf from beach homes (mansions!) caused the ATX to start screaming. Tide was rising so I quit. John, Laguna Niguel is a clean beach now. New mansions have been built on the cliffs above but public access is still maintained. The beach is maintained, patrolled, and more or less cle
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