Description
Northwest Africa 7454 (NWA 7454)
(Northwest Africa)
Purchased: 2012 Aug
Classification: Carbonaceous chondrite (CV3)
History: Purchased in Temara, Morocco by Aaronson in August 2012.
Petrography: (A. Irving and S. Kuehner, UWS) Composed of abundant, mostly rounded chondrules with less abundant amoeboid olivine aggregates (AOA) and irregular, fine-grained CAI in a deep reddish-brown matrix. Minerals identified in CAI include spinel, gehlenite, ulvöspinel, Al-Ti-diopside and rare Pt-bearing fremdlinge.
Geochemistry: Olivine (Fa1.9-15.4), orthopyroxene (Fs1.1-1.2Wo0.9-1.1), subcalcic augite (Fs1.1-3.5Wo32.1-34.0).
Classification: Carbonaceous chondrite (CV3).
