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Everything posted by fuss

  1. It is an attractive rock, colors are great. Could certainly be either Nephrite or Jasper though I would lean towards Nephrite based on the photos.
  2. yes back of a tile works. Try it in a couple different spots and see what you get.
  3. Interesting material, the second photo looks like a pebble of black basalt which it obviously isn't. I don't know of any other rocks/minerals that appear that opaque and are as translucent as your your first image posted. Neat.
  4. Could also be a feldspar or calcite based on the appearance of it, try to scratch it with a knife , feldspar and quartz wont scratch calcite will. The red portions could be iron oxide stains like Diggingd said, or another mineral tough to say based just on these photos. Not Amethyst though.
  5. Looks like one to me. These polish up nicely in my experience so that is a good option, and the fluorescent sodalite runs throughout the rock so no worries about sanding it away.
  6. Yes all the cherts/agates/fluorescent syenites came from the beach od lake Michigan.
  7. Some interesting things can be found here... Anorthoclase feldspar (moonstone) from Stettin pluton in Stettin WI, fluorescent sodalite in syenite (glacial deposit, foid syenite), geodes and agates, incredible looking chert nodules formed in limestone as well as the state rock red granite. Just thought I'd share some of what I have found recently.
  8. Is the blue spot always visible or only at certain angles when you rotate it? could be a schiller from labradorite or some other feldspar if it is seen only at certain angels. Unfortunately your camera is focusing on the background, try having a white sheet of paper behind it to create greater contrast, that might lock the focus in on the rock.
  9. Sorry, but that photo is not very helpful.
  10. This the article d_day? https://www.yooperlites.com/img/Yooperlite_Sodalite_Discovery_Paper.pdf
  11. Have fun, I haven't been to cave of the mound before should be be interesting. Unless you were talking about driving all the way up to lake Superior from Madison you wont find many if any agates at lake Michigan beaches but if you have a long wave UV light you could find some of these....
  12. Hardness and streak tests are as simple as it gets. Galena will have a dark grey to black streak and will easily scratch with a knife. What you may have here is some kind of iron ore material if you found it with a metal detector, put a magnet to it and see if it sticks, if does its not galena.
  13. Like already said, none look like agates. Here is a decent reference on understanding the different quartz varieties. http://quartzpage.de/
  14. igneous intrusive rock, could be a granite or granitoid of sort.
  15. Nice finds! #9 is really nice especially.
  16. My intent was not to ruffle any feathers with my post, so I apologize if seemed rude or dismissive, far from it . I just simply assumed the OP may want to have an idea of what his specimen is possibly made of in addition to the origins and potential uses of it had. Thx, fuss
  17. I think afreakofnature is likely correct on where it was formed and LowPoint as well on what it may have been used for. But what it actually is made of is most likely quartz in some form such as chalcedony based on what it looks like to me. You could do some simple tests to confirm that if you wish.
  18. what were you trying to do in the first place with it?
  19. Tumbling is all personal preference really, It all depends on what your plan is for the stuff. As a collector I prefer rocks and minerals in their natural state or sometimes rocks with a cut/polished face for display.
  20. Caliche maybe? just a guess.. that looks like fun are to dig around, thx for the photos.
  21. I found this at West Moreland state park in VA on the beach. It is a supposed location to find a variety of fossils including Megladon teeth. I found this lump of chert, that to me resembles a possible whale vertebrae. It is almost fist size. They said in the visitor lobby that whale bones can be found there and some on display. I am not very good with fossil id's. Any opinions? Thx.
  22. Ya you should be able to find yooperlites there. I suggest do a little research on what to keep an eye out for because like Haderly said some of the more interesting stuff might not look all that great initially laying there in a pile next to other common but colorful, sparkling wet beach rocks. Lake Superior agates are a good example, on the outside they can look pretty UN-interesting but on the inside they can be a work of art.
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