[meteorite-list] Question Regarding Fusion Crust

From: Michael Gilmer <meteoritemike_at_meteoritecentral.com>
Date: Fri, 11 Mar 2011 11:41:00 -0500
Message-ID: <AANLkTi=G3-6fRqxt13Wu+uqxb2UJFVw+puqLA2=R1eak_at_mail.gmail.com>

Hi Greg,

Yes and no. Maybe. Sort of. You can draw some general conclusions
from the look of the fusion crust - color and texture. Some
achondrites have distinctive fusion crusts, as do some exotic
chondrites. Generally speaking, the fusion crusts of many OC's share
a common look and texture. Look at photos of fresh Bensour, Bassi,
Chergach, Tamdakt, Ash Creek, Buzzard, Mifflin, etc - 100% crusted
stones with no breaks showing the interior will look very similar.

Calcium-rich crusts seen in some achondrites have a distinctive
glossiness to them, and some lunar and martian crusts can be brownish
or even greenish.

Best regards,

MikeG
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On 3/11/11, Thunder Stone <stanleygregr at hotmail.com> wrote:
>
> Hi List:
> Is there a way to tell if a meteorite is a Chondrite by looking at the
> fusion crust, or looking a just the exterior? I have noticed many times
> meteorites pictured and they are fully crusted, but are called chondrites.
> Is it just experience of looking at many chondrites or something about the
> fusion crust that you are able to tell the difference?.
> Greg S.
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Received on Fri 11 Mar 2011 11:41:00 AM PST