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Showing content with the highest reputation on 04/18/2021 in all areas

  1. Is this one a fulgurite? Here are two tektites and two concretions with kind-of-similar shapes. Maybe some concretions are fossils of tektites?
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  2. Interesting article. Meteorites decay and terrestrialize and I suppose a tektite might do the same. It sounds reasonable that they could form the core of an concretion. Many things do. I have found a lot of concretions with some mighty peculiar shapes. Some that seem pretty impossible. Many that look like an art project. I have always wondered what bizarre force of nature shaped and colored them like that. I'm a bit skeptical that anything I have seen is a petrified tektite. But I have plenty of concretions that resemble petrified alien artifacts, some petrified snowmen and a few petrified male sex organs. I'm sure there may be a petrified tektite out there somewhere too. There is a spot nearby that produces all sorts of concretions. Most are spheres. They can be solid hematite capable of taking a polish to loose sandstone that crumbles with thumb pressure. Some have cores and others have cores within cores. Some are perfectly spherical and Some are flattened. Some have an "equator" running around them. Some are long tapered worms running through series of spheres. Some look like little rubber ducks with a tail and a beak. Others are series of blobs and shapes a lot like a couple of yours.... Kinda like petrified bacteria colonies similar to stromatolite. There is a definite "style" to concretions from certain areas. Almost like they were created by different artists. They are no doubt a big mystery. I have been fascinated by concretions and their shapes for several decades now. They are some of the nicest rocks I have ever had the pleasure of meeting.
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  3. Thank you! Have you read this article http://adsabs.harvard.edu/pdf/1950PA.....58R..35L
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  4. Here's my new opal
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  5. Thanks Clay. I did not look at the link you put in earlier. I knew there had to be a better map than the forest service had posted. That Master Title Plat has good detail. Maybe 10 years ago, I created my own map based off the rather crude map from link I posted. That was all I could find at the time. It was quite the exercise. I used USGS maps to plot the boundaries. Of course the map I was putting together covered the intersection of four of those maps. At least all the datum on the maps were the same. Once I actually got to Lynx creek, The area I decided to go to was well within the mineral withdrawal area and did not go near any of the borders. I'm sure others have been to the area. There was a sluice carved into the bedrock and I'm sure others have seen that since.
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  6. It's about 6.5 inches it weighs 307 grams I could see metal , after scratching of suspected fusion crust. Scratch test. I want to cut it but I think I'll leave as is I'll get it tested.
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  7. Nope, we ain't going through this again!
    1 point
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