History: Purchased by Marcin Cimala in Tantan, January 2015. Physical: Single stone with weathered exterior, saw cuts shows many densely packed chondrules set in dark brown matrix. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous porphyritic chondrules, most with mesostasis or glass. Abundant opaque matrix. Apparent mean chondrule diameter 594±227 um, n=18. Geochem: (C. Agee and N. Muttik, UNM) Chondrule olivine Fa19.5±10.1, Cr2O3=0.19±0.17 (wt%), n=30; chondrule low-Ca pyroxene Fs12.7±8.0Wo0.5±0.4, n=12. Classification: Ordinary chondrite (L3.15), subtype 3.15 based on mean values of Fa and Fs and 1-sigma standard deviation, and on the ferroan olivine mean value of Cr2O3 and 1-sigma standard deviation (Grossman and Brearley, 2005).
Name : NWA 10296 Class : Chondrite L3.15 S3/W2 Region: Morocco Date : 01.2015 TKW : 566g