![]() |
||
|
Northwest Africa 6984 | |||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 6984 This is an OFFICIAL meteorite name. Abbreviation: NWA 6984 Observed fall: No Year found: 2010 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 272 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 24 Sep 2016 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 105:
Northwest Africa 6984 (NWA 6984) (Northwest Africa) Purchased: 2010 Classification: HED achondrite (Eucrite, monomict) History: The meteorite was bought in 2010 from a local meteorite dealer in Morocco. Physical characteristics: The meteorite displays a sand-coloured interior and is partly covered by fusion crust. Petrography: The meteorite is a monomict breccia displaying a basaltic texture of up to 1 mm sized exsolved pyroxenes and 1.5 mm sized calcic pagioclase. Minor phases include chromite, silica, pyrrhotite and ilmenite. Shock melt veins are abundant. Geochemistry: low-Ca pyroxene: Fs57.7±1.4Wo3.2±1.7 (Fs55.5-59.1Wo1.6-5.9, n=7, FeO/MnO=29-32); Ca-pyroxene: Fs23.7±1.0Wo43.7±1.0 (Fs24.3-27.3Wo40.9-44.3, n=14, FeO/MnO=28-31); calcic plagioclase: An88.3±3.0 (An81.3-91.1, n=15) | ||||||||||||||||||||||||||||
Data from: MB105 Table 0 Line 0: |
|
||||||||||||||||||||||||||||
Institutions and collections |
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011) |
||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
| ||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |