[meteorite-list] Muong Nong Tektites (was: MOLDAVITE COLORS)

From: Gary Fujihara <fujmon_at_meteoritecentral.com>
Date: Fri, 10 Dec 2010 12:29:17 -1000
Message-ID: <516D2F53-4CDE-4016-9370-83BFE8E39CBC_at_mac.com>

Here is a picture of a Muong Nong layered tektite from Thailand:
http://www.facebook.com/photo.php?pid=31853563&l=080b9b9fac&id=1394318075

gary

On Dec 10, 2010, at 12:16 PM, bernd.pauli at paulinet.de wrote:

> Hello Steve and List,
>
> "What is a muong nong tektite ... What do
> they look like and what is the composition?"
>
>
> Muong Nong-type tektite characteristics:
>
> - they are relatively large and blocky
> - they are layered
> - they do not display an aerodynamic shape
> - they are more internally heterogeneous in texture and chemistry
> - they have more bubbles than "normal" indochinites
> - they have higher volatile element contents
> - some contain relict minerals
> - they are related to the normal (splashform) Australasian tektites
> => similar age
> => similar chemical and isotopic composition
> - they represent a more primitive, less altered stage
> - they mostly come from an approximately 800 by 1100 km area encompassing
> parts of Cambodia, Laos, Thailand, Vietnam, and southern China
>
> Reference: Meteoritical Society, 1992
>
> C.C. Schnetzler (1992) Mechanism of Muong Nong-type tektite
> formation and speculation on the source of Australasian tektites.
>
>
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Gary Fujihara
Big Kahuna Meteorites (IMCA#1693)
105 Puhili Place, Hilo, Hawai'i 96720
http://bigkahuna-meteorites.com/
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Received on Fri 10 Dec 2010 05:29:17 PM PST