Putty {was: Re: [Rockhounds] Earthquakes can 'spark eruptions' }

[Axel Emmermann]

. But don't put the putty
> under a black light -- it might glow if the original Calcite was
> fluorescent.

As may the lineseed... again we learned something ;-)))
I always thought it was clay and some petroleum derivate but then I
remembered : that's plasticine, the stuff kids play with.
Putty doesn't do much under a blacklight, luckily for me. It would have
spoiled many a photo of fluorescent minerals.

Thanks Kreigh. 

Axel 

> -----Oorspronkelijk bericht-----
> Van: rockhounds-bounces at lists.drizzle.com
[mailto:rockhounds-bounces at lists.drizzle.com]
> Namens Kreigh Tomaszewski
> Verzonden: donderdag 11 december 2008 2:43
> Aan: Rockhounds at drizzle.com: A mailing list for rock and gem collectors
> Onderwerp: Putty {was: Re: [Rockhounds] Earthquakes can 'spark eruptions'
}
> 
> You make putty by crushing Calcite to powder and mixing it with boiled
> linseed oil. Predating caulk by decades, window putty was designed to
> make a seal between dissimilar materials (glass and wood), to remain
> flexible for a long time, and to be paintable.
> 
> Putty dries by oxidation of the linseed oil. It takes about a day for
> the surface to dry enough to be paintable, which slows further drying.
> 
> The linseed oil acts as a glue and forms weak cross bonds as it sits.
> By kneading it you break some of the cross bonds and it becomes more
> pliable.
> 
> So the next time you glaze a window, give thanks to the calcite
> specimen that was sacrificed to make the putty. But don't put the putty
> under a black light -- it might glow if the original Calcite was
> fluorescent.
> 
> Kreigh
> 
> 
> 
> 
> On Wednesday, Dec 10, 2008, at 11:20 America/Detroit, Axel Emmermann
> wrote:
> 
> > Kreigh
> >
> >>
> >> I would expect the squeeze and release of pressure waves passing thru
> >> the magma would make it more fluid, much like putty gets softer as you
> >> work it.
> > [Axel]
> > What would be the expanation fort that? I wonder, but then again... I
> > always
> > wonder ;-)
> 
> 
> --
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