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Martian Meteorites | Lunar Rocks | HED Group | PAC Group | Carbonaceous Chondrites | Rare Chondrites Last Updated: 7 May 2018

CM Group

This group is named for its type specimen, the meteorite of Mighei, which fell in Ukraine in 1889, and it has many more members than the previous group. About 80 chondrites of the CM group are known, and they mostly belong to petrologic type 2, although certain lithologies in some of its members are known to belong to type 1 (e.g. in Cold Bokkeveld). With about 10% water, they contain less than the CI chondrites and show less aqueous alteration so that some chondrules have been well preserved. Those chondrules consist of olivine and are scattered throughout the black matrix. In that mixture of phyllosilicate and magnetite, similar to the matrix of the CI chondrites, one also finds light-coloured inclusions. These high-temperature silicates are lacking in the CI group.

As with the CI chondrites, the CM chondrites are well known to contain a wealth of complex organic compounds. The well-studied meteorite of Murchison, a CM2 that fell in Australia in 1969, was found to contain more than 230 different amino acids, whereas on earth only 20 different amino acids are known and used as fundamental building blocks of life. Some of these extraterrestrial amino acids were found to exhibit strange isotopic signatures that might indicate that they don't have their origin within our solar system. These amino acids are believed to represent actual interstellar matter from other systems and nebulae that were trapped in this meteorite more than 4.5 billion years ago.

Murray

CM2
 fell: Sept. 20, 1950, Calloway County, Kentucky, USA

TKW :12.6 kg

 


Murray 00

53.35 gr

incredible fusion crusted chunk, has a sliced face. The largest specimen available Worldwide.

Price on request

Murray 01

12.17 gr

 fusion crusted fragment, a very large specimen for advanced collection.

SOLD



Murray 02

18.74 gr

dry sliced huge fragment.

SOLD

Murray 03

1.697 gr

dry sliced large fragment.

SOLD

 



Murray 04

1.462 gr

dry sliced large fragment.

SOLD

Murray 05

1.274 gr

dry sliced large fragment.

SOLD



Murray 06

0.828 gr

broken fragment.

SOLD

Murray 07

0.698 gr

broken fragment.

Price on request



Murray 08

0.565 gr

broken fragment.

SOLD

Murray 09

0.454 gr

broken fragment.

SOLD



Murray 10

0.427 gr

broken fragment.

Price on request

Murray 11

0.374 gr

broken fragment.

SOLD



Murray 12

0.314 gr

broken fragments.

SOLD

Murray 13

0.402 gr

dry slicing dust, can be used for bulk analysis.

SOLD

 


 

Chondrites for Sale :
>Carbonaceous Chondrites
   > CM Group (Mighei Type)
   > CO Group (Ornans Type)
   > CV Group (Vigarano Type)
   > CK Group (Karoonda Type)
   > CR Group (Renazzo Type)
   > CH Group (High-Metal Type)
   > CB Group (Bencubbinites)
   > CI1 Group (Ivuna Type)
>Ordinary chondrite
 
>H Group
   >L Group
   >LL Group

> Rare Chondrites
   > E Group (Enstatite Type)
   > R Group (Rumuruti Type)
   > Impact Melt Breccia IMB
> Oriented Chondrites
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tektites and impact glass:
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