[meteorite-list] RFS Picture of the Day Jan. 8 / weird properties of NWA ...

From: STARSANDSCOPES at aol.com <STARSANDSCOPES_at_meteoritecentral.com>
Date: Tue, 8 Jan 2008 14:49:40 EST
Message-ID: <cc3.21f35b46.34b52dd4_at_aol.com>

Hi Bob and list, I agree with Bob. The "Blue Phase" seems like a different
material than the "Brown Phase" Not just magnetic attraction but chondrule
occurrence and microscopic grain structures seem different as well.

Could it be a breccia? Also does any one have a slice with both materials
in it? Not just Blue Phase with brown staining.

Great micrograph Jeff!

In a message dated 1/8/2008 9:49:52 A.M. Central Standard Time,
nightsky55 at gmail.com writes:
Hi Jeff and all,
This is a wonderful photo of the type of radial pyroxene chondrules
I've seen in NWA 2965 and its cohorts. Very nice job Jeff. This is
certainly a curious meteorite. I've been passing a magnet over the
slices in my collection and have noticed a few things. The pale, grey
speckled areas that appear fresh have little to no attraction to a
rare earth magnet. If I didn't know better, I'd think it was an
achondrite. However the brown veined sections are clearly attracted
and the thick dark veins practically pull the magnet out of my hands.
Are the veins hematite from weathering of iron-rich meteorite or
something else? Any comments and observations from the group would be
appreciated.
Thanks,
Bob

On Jan 8, 2008 6:56 AM, <SPACEROCKSINC at aol.com> wrote:
> http://www.rocksfromspace.org/January_8_2008.html
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Received on Tue 08 Jan 2008 02:49:40 PM PST