[meteorite-list] They lack a fusion crust!?

From: Meteordealer <meteor.dealer_at_meteoritecentral.com>
Date: Thu Apr 22 09:44:29 2004
Message-ID: <00a501c0a1ea$d2724fe0$bd7e0304_at_vz.dsl.genuity.net>

Here is a nice page that i use frequently. It has all of the Lunars listed
with information and photos.
http://epsc.wustl.edu/admin/resources/moon_meteorites.html

Brad Sampson
meteor.dealer_at_gte.net

----- Original Message -----
From: "Robert Verish" <bolidechaser_at_yahoo.com>
To: <meteorite-list_at_meteoritecentral.com>
Sent: Wednesday, February 28, 2001 6:04 PM
Subject: [meteorite-list] They lack a fusion crust!?


> Hello List,
>
> Here is a quote from some writer for Sky & Telescope:
>
> "Dhofar 025 and 026 are brownish-gray amalgams of
> fused rock chips blasted out of the lunar highlands
> long ago. Weighing 751 and 148 grams, respectively,
> the two were found 20 km apart in early March.
> Although completely
> different in texture and composition, they lack fusion
> crusts and were found close together, so a single
> precursor can't be ruled out."
>
> My question is, Why does it lack a fusion crust?
>
> From the images that I have seen, both of these stones
> clearly show evidence of ablation. If you suggest
> that these are ventifacts, how do you explain a
> uniform sand-blasting occurring over the entire
> surface of these stones?
>
> I have read that there were experiments which showed
> that certain rock-types would not permit a fusion
> crust to develop on their surface. Is this an example
> of a fusion crust that wouldn't stick to the stones
> surface?
>
> If you suggest devitrification or "rind-development",
> keep in mind that both of these stones have a very low
> weathering grade. (By the way, Dhofar 081 does have a
> fusion crust.)
>
> Sure would like to hear from somebody that knows about
> these kinds of things.
> Bob V.
>
>
>
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Received on Wed 28 Feb 2001 07:59:07 PM PST