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Northwest Africa 11904 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11904 This is an OFFICIAL meteorite name. Abbreviation: NWA 11904 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 602 approved meteorites (plus 1 unapproved name) classified as CV3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 31 Aug 2018 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 107:
Northwest Africa 11904 (NWA 11904) (Northwest Africa) Purchased: 2018 Classification: Carbonaceous chondrite (CV3) History: Purchased by Abdelhadi Aithiba in Morocco in 2018. Physical characteristics: Single stone, dark, weathered, irregular exterior, distinct chondrules up to ~3 mm and scattered CAIs are visible on the surface; the matrix is dark gray in color. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount many irregular shaped porphryritic chondrules, some AOAs observed, fine-grained matrix makes up about ~50% of this meteorite. Geochemistry: (C. Agee, UNM) Olivine Fa2.8±2.7, range Fa0.5-11.9, Cr2O3=0.25±0.14 (wt%), CaO=0.27±0.13 (wt%), n=22; low-Ca pyroxene Fs4.5±7.7Wo1.2±0.5, n=6. Oxygen isotopes (K. Ziegler, UNM): 3 analyses, with δ17O = -2.359, -2.108, -0.349 and δ18O = 2.317, 2.000, 4.233 (linearized values). Classification: Carbonaceous chondrite (CV3) Specimens: 20.66 g including a probe mount on deposit at UNM, Abdelhadi Aithiba holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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Plots: | O isotopes: | ||||||||||||||||||||||||||||||
Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Photos: |
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Geography: |
Statistics: This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |