[meteorite-list] how do you get off desert varnish from a oriented stone?
Hi list. I have a real nice 31 gram oriented stone that has desert varnish on one side. It has very nice flow lines under it that I would like to see more of. Can someone please tell me how to that varnish off. Thanks and have a great day. -- Steve R. Anold, chicago, ill. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] how do you get off desert varnish from a oriented stone?
Hi Steve and List, I'd use a sandblaster and walnut shell mediaLOL. No, just kidding, don't do that. Desert varnish is impossible to remove without damaging the underlying texture and surface. You might be able to remove it using mechanical or chemical means, but features like delicate flowines might not survive the process. I'd suggest asking those people who have removed the orange clay from Millbillillie stones. Some people don't like that native orange clay staining, so they clean it off. Millbillillie is known for having delicate flowlines, so maybe whatever technique they use might work on your stone. But, desert varnish will be more resilient than clay, so you might be stuck with it either way. Caliche is another matter - tricky to remove, but doable. It's not vapor-deposited over time like desert varnish. Think of varnish like coatings applied to optical glass, but thicker. Best regards, MikeG -- - Web - http://www.galactic-stone.com Facebook - http://www.facebook.com/galacticstone Twitter - http://twitter.com/GalacticStone Pinterest - http://pinterest.com/galacticstone RSS - http://www.galactic-stone.com/rss/126516 - On 12/11/12, steve arnold chicagosteve1...@gmail.com wrote: Hi list. I have a real nice 31 gram oriented stone that has desert varnish on one side. It has very nice flow lines under it that I would like to see more of. Can someone please tell me how to that varnish off. Thanks and have a great day. -- Steve R. Anold, chicago, ill. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] how do you get off desert varnish from a oriented stone?
Desert varnish in itself shouldn't obscure flow lines. He must mean caliche. Date: Tue, 11 Dec 2012 10:57:34 -0600 From: chicagosteve1...@gmail.com To: Meteorite-list@meteoritecentral.com Subject: [meteorite-list] how do you get off desert varnish from a oriented stone? Hi list. I have a real nice 31 gram oriented stone that has desert varnish on one side. It has very nice flow lines under it that I would like to see more of. Can someone please tell me how to that varnish off. Thanks and have a great day. -- Steve R. Anold, chicago, ill. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] how do you get off desert varnish from a oriented stone?
If it is caliche (carbonate buildup) then mild acid should dissolve it. Perhaps an aqueous solution of 5% Hydrogen Chloride solution (HCl available as muriatic acid in concentrations around 35% from hardware stores - use eye and hand protection and good ventilation. Add acid to water to dilute not vice versa). Try a small spot of acid on the surface first. If it is going to do anything useful you will observe effervescence. Downside is that the acid will also attack any free iron but provided the acid is weak any carbonate should be dissolved away much quicker. Once any application of acid is complete the stone will need to be thoroughly rinsed and dried. Hcl is a gas at normal temperatures so should evaporate away with the water when it dries. I wouldn't try this with anything I was extremely fond of. Ideally you have another less precious stone from the same area with the same surface deposit that can be experimented on. Regards, John On 11/12/2012 16:30, bill kies parkforest...@hotmail.com wrote: Desert varnish in itself shouldn't obscure flow lines. He must mean caliche. Date: Tue, 11 Dec 2012 10:57:34 -0600 From: chicagosteve1...@gmail.com To: Meteorite-list@meteoritecentral.com Subject: [meteorite-list] how do you get off desert varnish from a oriented stone? Hi list. I have a real nice 31 gram oriented stone that has desert varnish on one side. It has very nice flow lines under it that I would like to see more of. Can someone please tell me how to that varnish off. Thanks and have a great day. -- Steve R. Anold, chicago, ill. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
