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Techniques for CollectorsRemoving metal brush deposits from tourmaline.
11th Feb 2012 01:44 UTCJenna Mast
Jenna
11th Feb 2012 02:36 UTCJoseph Polityka Expert
Try using a wet Brillo Pad. I have used them with harder gem minerals to remove thin coatings.
Best,
Joe
11th Feb 2012 10:54 UTCLuca Baralis Expert
Some ideas:
toothpaste and brush (and time...)
acid
ammonia
polish paste/pad for metals objects
an home made electrolytic device
However I've never tried any of that.
11th Feb 2012 15:59 UTCWilliam C. van Laer Expert
Complete removal is somewhat dependant on what type of metal brush you used: steel wire would require a soaking in warm/hot hydrochloric acid (muriatic acid), while a brass brush would require a soak in waek nitric acid. Both reactions would be facilitated by adding heat, but either will give off noxious fumes, so please use caution and do this under a fume hood.
Chris
12th Feb 2012 06:42 UTCJenna Mast
Jenna
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 25, 2024 17:54:11