NWA 7936 LL3.15 Chondrite Meteorites for Sale
Location: Northwest Africa, exact location unknown.
Found: Purchased 2012.
Classification: LL3.15 Unequilibrated Chondrite, (S2, W1/2) Reported by classifier, L3, as reported in the Meteoritical Bulletin Database.
Description: Large well-formed chondrules. Olivine (Fa1.4-76.8; Cr2O3 in ferroan examples is 0.06-0.83 wt.%, mean 0.23 wt.%, s.d. 0.22 wt.%, N = 14), orthopyroxene (Fs1.0-43.8Wo0.9-2.8), pigeonite (Fs18.2Wo22.1), augite (Fs8.5Wo41.9)sodic plagioclase, chromite, stained kamacite and troilite. (Classification and petrographic description by A.J. Irving.)
Comment: This meteorite is relatively high in troilite very low in native iron and macroscopically identical to Begaa (NWA 4910) including size, kind and orientation and elongation of chondrules. The analysis is close enough to make me think this is a pair. Here is an article and group of photos of Begaa by John Kashuba. I am not sure of the reason for the discrepancy between the classifier's report and the database, nor is Dr. Irving. For very unequilibrated chondrites, an effective mean Fa is very hard to determine and thus the distinction between L and LL chondrites becomes very subjective. To me, the iron and chondrule occurrence suggest this is an LL.
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|Weight: 20.3 gm||Weight: 35.7 gm||Weight: 234.4 gm|
|Features: Part slice||Features: Slice||Features: End|