[meteorite-list] Lawrencite-like oozing from an H6 Impact Melt Breccia

From: Dave Harris <entropydave_at_meteoritecentral.com>
Date: Thu Apr 22 10:04:51 2004
Message-ID: <004f01c2015e$780bfb80$a0980050_at_default>

Hi there,
I too have had this problem with stones getting all oozy and, like Mike
Farmer, this was Ghubara.
I rectified it by soaking in a NaOH/Isoprop solution, washing off with
deionised water after soaking for a week or so, then re-soaking in isoprop
for another few days, drying in the oven at just above 100 deg C for about
1/2 hour (depending on thickness...) then dropping the hot mass back into
isoprop (watch this bit - can be very dangerous indeed!!!).
And finally finished it off by rubbing candle wax into the surface which
imparts no sheen or gloss but fills the small pores with a water resistant
plug that is invisible - a bit of a palaver but it seems to have worked for
the past year.

Good luck....!

--
In gentle decay,
dave
IMCA #0092
imca_0092_at_hotmail.com (for IMCA member contact)
http://www.meteorites.ic24.net/index.html
http://www.meteoritecollectors.org
"I have a proof that x^n+y^n=z^n never has integer solutions for n>2.
However, it won't fit into my signature file...."

Received on Wed 22 May 2002 03:00:23 AM PDT