Hi there!
I think the 'ooze' is ferric chloride.
very best
dave
----- Original Message -----
From: Chuck
Sent: Wednesday, May 22, 2002 6:46 PM
Subject: Re: [meteorite-list] Lawrencite-like oozing from an H6 Impact Melt Breccia

  Hello Dave and all,
Has anyone ever had this "ooze" checked out, or already know what it is ?. Please don't let it ooze run through your fingers, without first checking it out.
Chuck 
 
-------Original Message-------
 
Date: Wednesday, May 22, 2002 12:03:25 AM
Subject: Re: [meteorite-list] Lawrencite-like oozing from an H6 Impact Melt Breccia
 
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

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