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NWA 5795

 

 

NWA 5795

Found Sahara, 2006

Carbonaceous Chondrite

Ornans Type : CO3

Specimen 1.20g slice

 

 

This is my first classified CO3 meteorite, a must have for me because live in  Besancon, 15Km to the town of Ornans where the first meteorite of this kind known fell in 1868...

6320元台幣

NWA 5795

 

 

NWA 5795

Found Sahara, 2008

Carbonaceous Chondrite

Ornans Type : CO3

Specimen is a 6.88g slice

This C03 is relatively fresh, you can see on the carbonaceous matrix a lot of free kamacite (metallic nickel/iron alloy) rarely seen like that in a CO3 type meteorite!

Carbonaceous chondrites, or C chondrites, are a class of chondritic meteorites comprising at least 7 known groups and many ungrouped meteorites. They include some of the most primitive known meteorites and represent only a small proportion (4.6%) of meteorite falls. These are named after a prominent meteorite—often the first to be discovered—in the group. For CO3, the small town of Ornans (famous for the painter Gustave Courbet), in France (not far from my home in the French department Doubs!).

CO3 meteorite can contain organic compounds such as simple formic and acetic acid, to much complex as alpha-amino acid, adenine and guanine (the "G" and the "A" in the basic DNA code made of guanine (G), adenine (A), thymine (T), and cytosine (C))... all common in any lifeform! With an other small chondrules carbonaceous chondrite group, CO3 are sometimes considered as come from a comet.

26000元台幣



 
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