Jump to content
Nugget Shooter Forums


Nugget Shooter Members
  • Posts

  • Joined

  • Last visited

Everything posted by metwerks

  1. Are their terrestrial rocks that have similar looking shock veins and melt pockets?
  2. Thanks Mike....just a perspective from Lunar meteorite pics from Top Meteorites web site that I was comparing to. I appreciate the quick response
  3. I found a rather large breccia with brown coating (mostly in recessed areas) and it looks similar to some of the lunar meteorites. I am curious if anyone here can chime in on this being fusion crust as it is not only in the cracks/recessed areas, but also on the stone itself. Thanks in advance QS12OOT4Os.bmp QS12TJV3Us.bmp QS12TKGD2s.bmp QS12TKU8Gs.bmp QS12TLDGMs.bmp QS12VYW56s.bmp
  4. I am so sorry.....completely left you guys hanging. I was cleaning up my computer and found my photos on hard drive which reminded me of this forum. The test results on the small sample I sent in were negative (They did not find nickel in iron sections). I do have a follow up question. Q1 : I sent in a really small piece (the size of a quarter) and wondering if nickel would ALWAYS be present in EVERY spec of iron? Q2 : Does slag typically have silicate within the iron sections? What causes the long cracks you see in the iron?(See latest pics)
  5. I sent my samples off to The Field Museum and they are going to perform tests on it (major, minor and trace element analyses with EDS, XRF and ICPMS) on or about Nov 8 with results by end of month I posted similar pics earlier, but I decided to measure the field of view to provide a scale for pictures. All of these pictures are 2mm from top to bottom and the first 2 pics shows a lot of very fine needle like crystals that I have seen on other meteorites due to high shock. The second shows the metallic inclusion (bottom right) and some of the etched texture (top left) Keeping my fingers crossed and cant wait for Nov to come.
  6. I do think there is more as there are pcs with broken surfaces. I am going back on Sunday
  7. UPDATE: I just returned from meeting with meteorite expert at UW-Madison and they believe it is a stony-iron mesosiderite. They have a SIMS lab, but unfortunately it is tied to research and would require a grant to test. They are getting in contact with Phil Heck at The Field Museum in Chicago to get me in for testing.
  8. This is exciting for anyone, let along an amateur like myself. The excitement has prompted me to look at my rock more and more and think I found fusion crust, allbeit heavily weathered. For now, I will enjoy the high of believing and hopefully don't get shot down
  9. Just a quick update: I sent these pictures to an Emeritus Professor of Geology with specialty in Extraterrestrial Impact Structures. He believes it is a meteorite and has connected me to Geoscience Dept at University Wisconsin - Madison. A big thanks to all of you and the help you provided. I will report back once I meet with them and hopefully have some good news to report
  10. @gaustad18 - I found this in U.P. where it is primarily a variety of sandstone out cropings @morlock - Thanks I will look this up @AzNuggetBob It has me puzzled too. Mikestang was kind enough to connect me to someone for some help - suggested I get a metallurgist involved to determine metal content. Meanwhile, here are some additional shots showing some kind of super fine crystals in the gaps between the iron. Also couple post etch shots with pocket microscope of linear inclusions.
  11. Here is about 5 minutes of etching with 50/50 muriatic acid. Field of view is approx 1/2". The first pic has some shiny strings of metal that the acid did not appear to attack as well as the bordering areas surrounding the linear voids. Could these be Schreibersite worms or crystals? I did find a iron meteorites with similar linear features for what it is worth and posted 2 of them that I found online
  12. Thanks Bob, the last picture is ferric acid for about 30 seconds, compared to sanded version above. I will give the weaker acid a try to see the difference
  13. How long should I etch and what should I see if it is crystallized?
  14. I don't think the crust / coating has much sheen, maybe just the led lights on my pocket microscope. I live near Milwaukee. Here is a microscope view showing a 1/8" area iron torn in the middle and filled with rock and larger area etched Also etched area
  15. Took another cut in an area with heavier iron concentration. Crazy pattern - thought you might enjoy
  16. Thanks Bob / Fred If they are not slag but are terrestrial, is it common to find this much iron and positive nickel test? Here are some other shots of the coating. I have no clue if this would be considered possible fusion crust or terrestrial weathering. The last pic is a closeup of an iron inclusion approx 0.040" dia and has NOT been etched, just sanded in one direction to a high polish (1500 grit)
  17. Received a quote for XRF @ $175.00 which strikes me as high. Does this sound in line?
  18. Here is a few better etched pics. I am using ferric acid and may have had on too long as it rusts quickly. Also tried a Nickel Detect home test which seems to be pretty pink says the red-green color blind guy - LOL I am trying to find a lab for XRF, but may just send piece to New England Meteoritical Services , assuming they are reputable. I would appreciate any suggestions where to send P.S. - I have always understood holes being the kiss of death but I did saw this with a high speed hand held grinder with diamond blade - not sure if i just crushed them out in cutting
  19. Fred - In hindsight, I should have posted on original but the subject of etching I thought was a bit different
  20. I posted a few days ago and hope I am not over posting. I found what could be a possible Mesosiderite albeit long odds and may just be slag. In reading more about them, I see that the widmanstatten is sometimes present. I etched a small piece with ferric acid and do see a pattern similar to an altered widmanstatten like Zacatecas. I am curious if this is indication pointing to being a meteorite vs slag
  21. Here is a few other pics to share as I wait for XRF test - I thought this looked like fusion crust but then again, I am quite the novice. Might just be terrestrial weathering / coating
  22. Thank you everyone!!!! I did take another grind which does show the matrix better for what it is worth - I know pictures are tough to tell - I will get a XRF done if it is not too expensive - I ordered a Nickel Detect kit too which will arrive sometime next week. Happy hunting
  23. There is a Assay lab in town and they do XRF. Do I have them test the iron only and if so, what am I looking for? High nickel content? What range would confirm meteorite vs slag? thanks to all. I will keep you posted no matter the outcome in the meantime, here are some other meso examples I found
  24. Mike, thank you.....frankly, I find pictures very difficult to ascertain what I see vs you..... The engineer in me is trying to be subjective of what I found, but knowing the land, I find it hard to imagine how slag would find its way to where I found it. I love this site and you are a great asset and with that comes respect. I am leaning more to slag than a dream......that said, due diligence is not unwarranted
  • Create New...