|
Northwest Africa 12891 | |||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 12891 This is an OFFICIAL meteorite name. Abbreviation: NWA 12891 Observed fall: No Year found: 2005 Country: (Northwest Africa) Mass: 1580 g | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 836 approved meteorites (plus 1 unapproved name) classified as L3. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||
Comments: | Approved 7 Sep 2019 | ||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 108:
Northwest Africa 12891 (NWA 12891) (Northwest Africa) Purchased: 2005 Classification: Ordinary chondrite (L3) History: Purchased by an anonymous collector from a dealer at the Munich Show in 2005, subsequently acquired by PSF, then sold in 2019 to the Harkness Collection. Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed chondrules (apparent diameter 830±420 µm, N = 23) are set in a sparse, finer grained matrix containing stained metal. Geochemistry: Olivine (Fa24.1±2.8 (range Fa19.0-27.5, N = 6); Cr2O3 in ferroan examples <0.04 wt.%), low-Ca pyroxene (Fs20.8Wo0.7; Fs12.9Wo5.0), subcalcic augite (Fs9.6Wo33.3). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.92. Classification: Ordinary chondrite (L3). Specimens: 33.72 g including one polished thin section at PSF; remainder in Harkness Collection. | ||||||||||||||||||||||||||||||||
Data from: MB108 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||||
Institutions and collections |
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024) |
||||||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
| ||||||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||||||
Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
| ||||||||||||||||||||||||||||||||
Revision history: |
This lists important revisions made to data for this record.
|