[meteorite-list] Rusty droplets

From: Adam Hupe <raremeteorites_at_meteoritecentral.com>
Date: Thu, 7 Jun 2007 12:03:43 -0700 (PDT)
Message-ID: <939482.47076.qm_at_web30705.mail.mud.yahoo.com>

Yes, the dreaded so-called "lawrencite disease"
meaning that inexperienced dealers more than likely
prepared these specimens with tap water containing
chlorine. Chlorine exasperates this condition. Dry the
pieces out in pure Ethyl alcohol and then dry sand
them, may take several applications, especially with
Ghubara.

Best Regards,

Adam







--- giovannisostero <GiovanniSostero at libero.it> wrote:

> Hi,
> I noticed that a coupled of slices (Ghubara and NWA
> 869) I bought few months ago from two different
> dealers, are producing some small liquid droplets of
> rusty appearance. After cleaning, the droplets
> develope again in a matter of few weeks. Any idea
> about how to cure it? The samples are stored in
> plastic envelopes but without any particular
> desicant.
> Cheers,
> Giovanni
>
>
>
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Received on Thu 07 Jun 2007 03:03:43 PM PDT