[Nhcoll-l] [EXT] Rocks in a geological trail

[Gali Beiner]

Thanks for your input, Rod, Yasemin and Valerie!



On Wed, Sep 14, 2022 at 5:00 PM Valerie Tomlinson <VTomlinson at nature.ca>
wrote:

> Hi Gali
>
> There is no such thing as a coating that prevents vandalism, weathering,
> and wear in an outdoor environment. Some coatings can reduce certain kinds
> of damage to certain kinds of materials, but for the situation you describe
> I think coatings would only risk enhancing certain kinds of damage.
>
> Since it is rocks you are talking about, I would recommend no coating, and
> choose only sacrificial specimens. Don’t display anything of high value, or
> display some sort of replica of the more high value-high interest items if
> that is possible (e.g. moulds of fossils). In a matter of years you will
> get a build up of finger grime and shiny areas of wear. I’ve seen even
> granite and basalt worn down by public interaction over a span of about 10
> years.
>
> That’s my 2 cents.
>
> Valerie Tomlinson
>
>
>
> *From:* Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> * On Behalf Of *Gali
> Beiner
> *Sent:* Wednesday, September 14, 2022 7:59 AM
> *To:* NHCOLL-new <Nhcoll-l at mailman.yale.edu>
> *Subject:* [EXT][Nhcoll-l] Rocks in a geological trail
>
>
>
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> Dear NHCOLL-listers,
>
>
>
> I've been asked about how to enhance the preservation chances of rocks
> intended for display along an outdoor educational geological trail. The
> specimens will represent different geological time periods and the trail
> itself will be within a nature reserve in the desert (very hot summers,
> cold nights, strong exposure to elements and visitors). I'm told that the
> chosen specimens will be fixed within the trail, cemented there, but there
> are worries concerning the long term preservation considering the
> vagrancies of the weather plus handling (and being stepped upon?) by
> visitors.
>
>
>
> Under such circumstances, not that much can be done against outright
> vandalism, but I was asked if there was some kind of coating that could be
> applied to sandstones, limestones and shales to help their preservation.
> Most of the materials I work with are intended for indoor use. Would the
> outdoor conservators on the list like to make suggestions - yes/no to
> coatings, which kind of coating if any?
>
>
>
> Thanks,
>
>
>
> Gali
>
>
>
> --
>
> Gali Beiner (ACR)
>
> Conservator, Palaeontology Lab
>
> National Natural History Collections
>
> The Hebrew University of Jerusalem
> Berman Building, Edmond J. Safra campus, Givat Ram
> Jerusalem 91904, Israel
> Fax. 972-2-6585785
> *gali.beiner at mail.huji.ac.il <gali.beiner at mail.huji.ac.il>*
>
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-- 
Gali Beiner (ACR)
Conservator, Palaeontology Lab
National Natural History Collections
The Hebrew University of Jerusalem
Berman Building, Edmond J. Safra campus, Givat Ram
Jerusalem 91904, Israel
Fax. 972-2-6585785
*gali.beiner at mail.huji.ac.il <gali.beiner at mail.huji.ac.il>*

*https://nnhc.huji.ac.il/?lang=en <https://nnhc.huji.ac.il/?lang=en>*
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