[meteorite-list] NWA 6292 (BRA) IS paired to NWA 5400 !

From: Shawn Alan <photophlow_at_meteoritecentral.com>
Date: Tue, 28 Sep 2010 12:56:53 -0700 (PDT)
Message-ID: <320716.92445.qm_at_web35401.mail.mud.yahoo.com>

Hello Count and other Listers :)


Count said;

What would command more of one's treasure. An Ensesheim with provenance, or a stone of the same classification from NWA? How about the first meteorite, with COMPLETE analysis, that is the first of it's kind found to be tied to the earth's early formation? Say NW 5400?

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Count all meteorites that are given a name are all complete with an analysis, so this doesn't make NWA 5400 more special. Also if you look at it every meteorite in its own right,?can be deemed as different. Look at Vesta, I wonder how many meteorites come from that asteroid and here we have variations in each meteorite from that parent body. I find collecting from a classification aspect with NWA's?to be very cumbersome because of the slight?variations in meteorites which some people say its rare.

Now lets talk about rarity, I would take an Ensisheim over a NWA any day of the week and even if its the "the first of it's kind found to be tied to the earth's early formation?" as how you put it with a question mark. Now the dilemma with this unproven theory is that wouldn't the cosmic-ray-exposure age of NWA 5400 be 4 billion years old when the Earth had the catastrophic event to eject material of the planet? The oldest date with stony meteorites is about 100 million year for the CRE. I find it odd that the CRE hasn't been test yet? That in its self would prove or disprove the theory and put it at rest.
?
Shawn Alan
IMCA 1633
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Received on Tue 28 Sep 2010 03:56:53 PM PDT