Steve#3 wrote:
"[not] Anything with HCL or flourine"
Harlan wrote:
"oxaclic acid work like is does when removing red clay stains form
quartz crystals?"
Hi Friends,
Just a few thoughts:
Oxalic acid will probably clean some meteoritical residue off any
quartz crystals you can find in meteorites.
Oxaclic[sic] acid only gives a good vista with Meteorites for Windows.
Flourine[sic], milk of magnesia and monocynical pigeonite eggs [cum
grano salis] are useful in a pinch in the field for starving meteorite
hunters trying to eke out a living off the land, so on this I agree
with Steve#3.*
Are quartz crystals porous in aqueous solutions? Are stony meteorites?
Are quartz crystals uniform in composition? Are stony meteorites?
Is silicon dioxide (=glass, quartz, etc.) inert to these reagents? Are
stony meteorites?
I agree it would be nice to be an alchemist, but I think this is far
more profound of a science than these posts would suggest, without an
academic evaluation of a broad range of chemistry and mineralization
processes. I say this because I do not like many "cleaning techniques"
I've seen used on metorites just to get some skin-deep aesthetics for a
quick sale. In fact, some "cleaning" procedures are based on removing
visually contaminated meteorite material and falsely refinishing the
surface and representing it as something it is not (losing information
on flight markings, etc, which has already been suggested). There are
many degrees of misrepresentation and negligence by gurus in cleaning
meteorites for personal use, but then passing them along to clueless
enthusiastic buyers. Hopefully this is recognized for what it is, just
as fake meteorite claims, or clarified with asociated label and
hopefully a lower price.
Sic transit gloria astra,
but great health anyways
Doug
PS Ponce de Leon is reputed to have washed his meteorites in Boinca
Fountain off Florida, which restored their youthful appearance. Other
cynics believe there is no such thing as a fountain of youth, and we
should just appreciate all stages of life as equally precious,
especially when getting older as challenges become more and more
impressive...
*They are good ingredients for meteorite waffles and not good
candidates for the next craze poisoning the eBay meteorite quarry.
Steve#3's example of my 1860 proof dollar coin that was buried and
impregnated in the outback for 30 years doesn't seem to remind me
either of stony meteorites or even of a proof coin that has anything
suggestive of having been struck on proof dies - so here I disagree
with this off-base analogy. Way too many apples to oranges comparisons
here (quartz crystals, etc.). Not saying that some insights on the
science with merit wouldn't be very interesting, just, so far none have
been offered.
-----Original Message-----
From: Steve Dunklee <[EMAIL PROTECTED]>
To: Alexander Seidel <[EMAIL PROTECTED]>;
meteorite-list@meteoritecentral.com; [EMAIL PROTECTED]; tett
<[EMAIL PROTECTED]>; [EMAIL PROTECTED]
Sent: Mon, 3 Nov 2008 11:19 am
Subject: Re: [meteorite-list] cleaning Millbillillie ?
Yes. So might msg, tsp, Dmso, and white vinegar. depending on a lot of
conditions. Anything with HCL or flourine should be avoided, as well as
Sulfuric
acid.
Steve
P.S. But Don't clean them! they are like coins!
--- On Sun, 11/2/08, mckinney trammell <[EMAIL PROTECTED]>
wrote:
From: mckinney trammell <[EMAIL PROTECTED]>
Subject: Re: [meteorite-list] cleaning Millbillillie ?
To: "Alexander Seidel" <[EMAIL PROTECTED]>,
meteorite-list@meteoritecentral.com,
[EMAIL PROTECTED], "tett" <[EMAIL PROTECTED]>
Date: Sunday, November 2, 2008, 7:14 PM
would oxaclic acid work like is does when removing red clay
stains form quartz crystals?
--- On Sun, 11/2/08, tett <[EMAIL PROTECTED]> wrote:
> From: tett <[EMAIL PROTECTED]>
> Subject: Re: [meteorite-list] cleaning Millbillillie ?
> To: "Alexander Seidel" <[EMAIL PROTECTED]>,
meteorite-list@meteoritecentral.com, [EMAIL PROTECTED]
> Date: Sunday, November 2, 2008, 5:10 PM
> I now have a much deeper appreciation for
Millbillillie.
>
> I will not attempt cleaning and will reflect on the
> "subtle" beauty these
> meteorites have.
>
> Many Thanks!
>
> Mike
>
>
> ----- Original Message -----
> From: "Alexander Seidel"
<[EMAIL PROTECTED]>
> To: "tett" <[EMAIL PROTECTED]>;
> <meteorite-list@meteoritecentral.com>;
> <[EMAIL PROTECTED]>
> Sent: Sunday, November 02, 2008 11:24 AM
> Subject: Re: [meteorite-list] cleaning Millbillillie ?
>
>
> >> I agree that there is a special
characteristic
> that would be lost if the
> >> red staining were to be removed from a
> Millbillillie individual.
> >> However,
> >> it is also great to have meteorites pristine
with
> no terrestrial
> >> alteration.
> >> The priciest Millbillillies are those that
with
> dark black glassy crusts.
> >
> > No, a meteorite like Millbillillie should be
looked at
> in a much more
> > subtle way!
> >
> > It fell in 1960, and was collected no earlier
than 10
> years later! Talking
> > about
> > Millbillillie is exciting in many respects, as it
e.
> g. displays different
> > textures on
> > cut slices, but talking about exterior surface, I
> would always prefer a
> > piece with
> > natural (laterite) patina over a piece which was
> somehow "cleaned" (..if
> > this were
> > possible..) or has only got some more or less
glossy
> black crust alone
> > rather than
> > the brownish-reddish surface stains that are so
very
> *typical* for this
> > meteorite,
> > and are part of its "character", so to
> say...!
> >
> > You are right insofar as, when we are talking
about
> may be fresh Eucrites
> > or fresh
> > Howardites, we are looking and longing for fresh
> glossy black crust in the
> > first place,
> > as will be the case with e. g. the early
collected
> pieces of a historical
> > fall like Stannern,
> > or some rare other finds and falls, but things
are a
> quite a bit different
> > with a fall like
> > Millbillillie, even if it occured as late as
1960,
> considered a "fresh"
> > fall....
> >
> > Well, nothing but my two (Euro-)Cents,
> > Alex
> > Berlin/Germany
> >
> >
> >
>
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