[meteorite-list] CHARACTERISTICS OF FINE BACTERIA-LIKE TEXTURE FORMED BY IRON METEORITE

[Shawn Alan]

Hello Lister'

For you die hard science fans, I think this would be a good read with the current events with ALH84001 


CHARACTERISTICS OF FINE BACTERIA-LIKE TEXTURE FORMED BY IRON METEORITE 
BY ATMOSPHERE REACTION.

Yas. Miura, Yamaguchi University, 1677-1 Yoshida, Yamaguchi University, 753-8512, Japan (dfb30 at yamaguchi-u.ac.jp) 

Introduction: 
Spherule texture can be formed in 
dynamic reaction during any meteoritic impact in air. 
However, there are no reports on nano-bacteria-like 
(i.e. spherule-chained) textures with iron (and Nickel) 
oxides (with chlorine) in composition and microtexture 
with 100nm order [1, 2, 3] in iron meteorite. 
The purpose of the present study is to show spherulechained 
texture with micro-texture of 100nm in order 
found in the Kuga iron meteorite, Iwakuni, Yamaguchi, 
Japan. 
  
Fine bacteria-like textures in the Kuga meteorite: 
The Kuga iron meteorite found in Kuga, Iwakuni, 
Yamaguchi, Japan reveals spherule-chained 
texture with Fe, Ni-rich composition with 10μm in 
size, where each spherule contained “long microtexture 
in 100nm in size” (Fig.1) [1, 2, 3]. The complex 
texture of flow and chained shapes can be found 
in the fusion crust of the iron meteorite formed by 
quenched and random processes with vapor-melting 
process in air of the Earth. The FE-ASEM with EDX 
analyses by an in-situ observation indicate that the 
matrix of the spherule-chained texture with Fe, Ni, Orich 
(with minor Cl) composition is carbon-rich composition 
formed by impact reactions in air. 
  
Click on the link for the rest of the article 
http://www.lpi.usra.edu/meetings/lpsc2010/pdf/2489.pdf 
  
Shawn Alan 
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