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NWA 13278 (7.45 gram)

550$

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[ Meteoritical Bulletin Database ]

 

Classification: Enstatite achondrite (Aubrite) W-low / S-low
Place/Time: 2019 in Ouargla, Algeria
Mass: 564g


History: Purchased by Zaid Sbitti in November 2019 from a dealer in Ouargla, Algeria.
Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of large clasts of enstatite (with diopside exsolution lamellae) and subordinate forsterite set within a finer grained matrix composed of enstatite, sodic plagioclase, Cr-troilite, niningerite and Si-bearing kamacite.
Geochemistry: Enstatite (Fs0.0-0.1Wo0.9-1.1, N = 2), diopside (Fs0.0-0.1Wo44.4-45.8, N = 2), forsterite (Fa0.0±0.0, N = 2), plagioclase (Ab86.1An0.5Or13.4), kamacite (Ni = 3.0 wt.%, Si = 3.1 wt.%), troilite (Cr = 2.8 wt.%).