[meteorite-list] Tamdakht classification

Philippe Thomas thomasmeteorites at wanadoo.fr
Sun Feb 1 01:49:27 EST 2009


For those who are interested, I updated my page on Tamdakht and added a Back Scattered Electrons (BSE) image supplied by Albert Jambon.

- We know that it is an H according to:
1) The magnetic susceptibility (= quantity of metal) 
2) the composition of minerals (olivine + pyroxene)

- The metamorphic type 5 (to verify) depends on the degree of equilibration between minerals and (in the second order) of the texture (not only chondrules, but also size of feldspars and metal-sulphide areas). 
Here it is certain that it is neither a type 3 nor a type 6.

A preliminary declaration was sent to the MetSoc, result of the French-Moroccan cooperation.

Best wishes,
Philippe
http://www.meteoritica.com/tamdaght.html



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