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| Northwest Africa 8330 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 8330 This is an OFFICIAL meteorite name. Abbreviation: NWA 8330 Observed fall: No Year found: 2014 Country: Morocco Mass:  676 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 361 approved meteorites classified as LL3. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||
| Comments: | Approved 14 Mar 2014 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 103:
Northwest Africa 8330 (NWA 8330) Morocco Purchased: Jan 2014 Classification: Ordinary chondrite (LL3) History: Purchased from a dealer in Morocco in 2014 by Aras Jonikas Physical characteristics: One brown partially fusion crusted stone, cut surface reveals many very closely packed chondrules of various sizes and colors. Petrography: (A. Rubin, UCLA) Microprobe examination of a polished mount shows the rock contains very sharply defined chondrules averaging about 600 μm in diameter; this is in the LL range. Chondrule textural types include PO, POP, PP, BO, C, RP. Many of the chondrules contain polysynthetically twinned low-Ca clinopyroxene phenocrysts. Small amounts of fine-grained silicate matrix material are present. Geochemistry: Mineral compositions and geochemistry: Olivine Fa15.7±10.5 (Fa0.52-37.7, n=24), olivine Cr2O3 is 0.06±0.08 wt.%, 21% of the olivine Fa analyses are in the LL range; low-Ca pyroxene Fs7.8±4.7Wo0.8±1.2 (Fs1.9-14.0, n=13); Ca-pyx Fs22.7±1.3Wo20.5±10.5 (n=5). Classification: Ordinary Chondrite (LL3), Cr2O3 indicates that the petrologic type is >3.2, the absence of isotropic glass suggests that the petrologic type is >3.5. Specimens: 24.9 g type specimen including a probe mount and a 20.47 g slice on deposit at UCLA, Aras Jonikas holds the main mass | ||||||||||||||||||||||||||||||
| Data from: MB103 Table 0 Line 0: |
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| Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography:
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Statistics: This is 1 of 1556 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||