Almahata Sitta

It seems understatement to say that Almahata Sitta is polymict given that it contains at least twelve lithologies.  Since the  lithologic types are dominated by ureilites, though, it is classified as a polymict ureilite.  Much of the remainder is EL and EH chondrites of various petrographic grades, melts and breccias.  Also found are H and L ordinary chondrites and a unique chondrite.  Roger Warin and I wrote about Almahata Sitta for Meteorite magazine’s February 2012 issue.  Our Centerpiece article used some of the following pictures.

Almahata Sitta Coarse Grained Ureilite

 

Almahata Sitta Coarse Grained Ureilite

 

Almahata Sitta Coarse Grained Ureilite

 

Almahata Sitta Coarse Grained Ureilite

 

Almahata Sitta Fine Grained Ureilite

 

Almahata Sitta Fine Grained Ureilite

 

Almahata Sitta Fine Grained Ureilite

 

Almahata Sitta EL6

 

Almahata Sitta EL6

 

Almahata Sitta EL6

 

Almahata Sitta EL6

 

Almahata Sitta H5/6

 

Almahata Sitta H5/6

 

Almahata Sitta H5/6

 

Almahata Sitta fragment MS-CH unique chondrite

 

Almahata Sitta fragment MS-CH unique chondrite

About the Author

John Kashuba
John is a natural history enthusiast living in Oregon.
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