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Any suggestions what type of mineral is this

+1 vote

To my humble opinion it's a fluoride. It's about 5 kilos. I find it in Rodopi mountain, Bulgaria. Thanks in advance!

asked Mar 6, 2016 by gemfan (170 points)

3 Answers

0 votes
Also want to ask how to clean it...
answered Mar 8, 2016 by gemfan (170 points)
0 votes

I think it is Prasiolite (Green form of Quartz) but you have to check the rock's hardness . Prasiolite's hardness is 7 so it could easily scratch glass.I don't think though that it's fluoride cause fluoride's form is more close to a crystal (More transparent and clear than non-transparent rocks). If you have any other crystals or minerals check the hardness of your rock with the Mohs scale of minerals hardness here:
                          Prasiolite stones:                                           

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answered Mar 9, 2016 by Tagiadin John
0 votes
If you want to remove the brown parts you could try and use Hydrochloric Acid (it will remove them if they are somehow made of salty minerals, but I am not sure what the brown part is,it could be dirt or something like this..) but use gloves and be really careful cause it can burn your hands...
answered Mar 16, 2016 by Tagiadin John

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