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Techniques for CollectorsCleaning Zincite
30th Jul 2019 20:24 UTCDavid Dantes
31st Jul 2019 23:58 UTCKeith Compton 🌟 Manager
https://www.mindat.org/mesg-55-59284.html
I would try a small section/piece with iron out.
1st Aug 2019 00:21 UTCDavid Dantes
1st Aug 2019 01:28 UTCSteve Hardinger 🌟 Expert
Regardless, let us known how it turns out.
1st Aug 2019 01:57 UTCDavid Dantes
1st Aug 2019 17:36 UTCSteve Hardinger 🌟 Expert
Assuming 'Polish smokestack' zincite has the same chemical composition as natural zincite (ZnO) my reference materials say it will 'be soluble' (amount unspecified) in acids and alkalis (which acids or alkalis, and what concentration and temperature, unspecified).
Also, I don't understand your reference to 'hydroxyzincite'. Perhaps you mean hydrozincite? If so removing the patina without dissolving the zincite itself could be difficult.
And if if you can find a procedure to remove the patina and leave the zincite, the resultant surface might be dull and rough.
So maybe this is a case where no cleaning should be performed, but instead, curation efforts made to stop further damage.
1st Aug 2019 17:54 UTCDavid Dantes
1st Aug 2019 21:12 UTCSteve Hardinger 🌟 Expert
1st Aug 2019 22:13 UTCDavid Dantes
2nd Aug 2019 00:56 UTCKyle Bayliff
2nd Aug 2019 01:15 UTCDavid Dantes
2nd Aug 2019 05:50 UTCSteve Hardinger 🌟 Expert
2nd Aug 2019 21:45 UTCThomas Lühr Expert
This is true. For example CaO is more reactive than CaCO3.
But from intuition i tend to agree with Kyle and would give the same advice.
Also, hydrozincite is not a 'pure' carbonate but also contains the OH-group which causes usualy an easier solubility.
Finally, a crust/patina is often less dense/compact than the underlaying crystals.
An agent that solves haydrozincite will most probably also solve zincite, but probably not that fast.
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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: May 9, 2024 18:03:34