|
Northwest Africa 7914 | |||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 7914 This is an OFFICIAL meteorite name. Abbreviation: NWA 7914 Observed fall: No Year found: 2013 Country: Morocco Mass: 268 g | ||||||||||||||||||||||||
Classification history: |
This is 1 of 280 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||
Comments: | Approved 27 Jul 2013 | ||||||||||||||||||||||||
Writeup |
Writeup from MB 102:
Northwest Africa 7914 (NWA 7914) Morocco Purchased: 2013 Classification: HED achondrite (Eucrite, monomict) History: Purchased by Adam Bates from a Moroccan meteorite dealer in 2013. Physical characteristics: Single stone, black fusion crust, saw cut reveals brecciated texture with pyroxene- and plagioclase-rich clasts, most 1-3 mm, but also scattered cm-sized clasts, set in gray groundmass. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows domains with abundant mesostasis, quench crystals, and zoned pyroxene phenocrysts, while other domains are composed of clastic or brecciated textures with ~1 mm plagioclase and pyroxenes. Ubiquitous silica, chromite, ilmenite, and low-Ni iron metal. Geochemistry: (C. Agee and L. Burkemper, UNM) EMPA. Low Ca-pyroxene Fs45.7±5.3Wo2.6±0.5, Fe/Mn=34±1, n=19; augite Fs19.1Wo42.5, Fe/Mn=30; plagioclase An91.6±1.0, n=3. Classification: Achondrite (eucrite, monomict), unequilbrated eucrite, low-Ca pyroxenes show Fe-enrichment trend. Specimens: 20.5 g including a probe mount on deposit at UNM, Adam Bates holds the main mass. | ||||||||||||||||||||||||
Data from: MB102 Table 0 Line 0: |
|
||||||||||||||||||||||||
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) |
||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
| ||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||
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.
|