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  1. It's definitely malachite. The crystal itself was confusing me. I tried scratching it with all that stuff and nothing was working for me. I stopped fussing with it and broke a small crystal off. I'm pretty sure now that it's calcite.
  2. Picked this up at a small rock shop in Ohio. No labels, no idea where it's from. My original thought was calcite on quartz without looking closely. Emailed seller, they say aragonite. There is a strong reaction to vinegar. But when I tried to scratch the crystals themselves, I can't discern any visual or tactile evidence of scratches from steel, quartz, or from an aqua. The hardness surprised me. The smaller crystals on the matriz must be calcite . Any thoughts?
  3. Thanks! In PA. Don't usually make it very far from home, with three kids and all.
  4. Im pretty serious and I do have reference material. Books, mindat, the entire internet really...all readily available. However, to ask the particular question about if and how acid could affect a certain mineral, seemed like other people, like yourself, would be the better resource. I do apologise for not including the location, I forget that other people don't know that I only have time to collect locally in PA. This came from PA. Previous posts have mentioned when I have something of unknown origin, things I have bought at auction. I don't like to influence other's opinions, I've seen too many people jump on ID bandwagons in other formus. But I agree that my posts can be too vague. Forgive me? I will check to see if there is a location specific handbook, great idea
  5. An I always fuss over the small stuff lol...
  6. I thought the same thing, it's in such small amounts/pieces it's difficult to test
  7. After soaking a few pieces of quartz in muriatic acid, what I thought could be small radials of pyrite, are now green. Any ideas? Did the acid affect the mineral, or did it simply remove an iron oxide crust. Pics are really hard to take, it's so small. Including a before pic too. Third pic shows the color the best.
  8. Completely agree, there's a charm, to me, in seeing the various formations and intricacies
  9. Anyone else here keeping weird broken chunks for a single perfectly clear quartz point? Or is it just me?
  10. Good though on the marcasite. There is actually a little cube formation here and there. Hard to see here
  11. Not magnetic, has a reddish brown streak. Saw pyrite and pseudomorphs in the same area. Not sure, myself
  12. Thanks! I do love it, it's so fragile though
  13. What would you call this? Some quartz with very soft pyrite like material. Poor structure, it crumbles VID_20180902_163406.mp4
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