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I found a regular old rock in northwest Missouri, Buchanan county, St Joseph, Mo in a creek bed in a glacier field. It looked like it may have something in it. I dissolved the (3 times larger) rock with toilet bowl cleaner (I think that contains HCl). It fluoresces pink under a black light, there's some phosphorescence around an edge.

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closed as off-topic by Universal_learner, trond hansen, arkaia, Peter Jansson, Fred Jun 5 at 9:16

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Please review our rock identification guidelines to provide the missing information so that your question is both answerable and useful to new users." – Universal_learner, trond hansen, arkaia, Peter Jansson, Fred
If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ Welcome to the site. It looks a nice mineral, but maybe you can give us some info as a more precise location to search for regional geology on USGS. Also, try to put the piece on a table with no backgroud noise and a rule for scale, trying to focus well the picture. We wrote this guide if it helps to realize what info do we need. earthscience.meta.stackexchange.com/questions/124/… $\endgroup$ – Universal_learner Jun 4 at 18:16
  • $\begingroup$ Does appetite fluoresce, pink? $\endgroup$ – Petroh2o Jun 5 at 1:51
  • $\begingroup$ At least two people have now edited your question for language and content. Please write future questions with good information and decent sentences. $\endgroup$ – Jan Doggen Jun 5 at 6:08
  • $\begingroup$ Yes fluoroapatite does fluoresce. $\endgroup$ – Universal_learner Jun 5 at 11:16