|
Northwest Africa 11520 | |||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 11520 This is an OFFICIAL meteorite name. Abbreviation: NWA 11520 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: 75 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 226 approved meteorites classified as Eucrite-br. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 6 Dec 2017 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11520 (NWA 11520) (Northwest Africa) Purchased: 2017 Classification: HED achondrite (Eucrite, brecciated) History: The meteorite was bought from a local meteorite dealer in Erfoud, Morocco. Physical characteristics: Dark-grayish individual with patches of fusion crust. Petrography: The meteorite is a fine-grained breccia composed of basaltic and dark impact melt clasts set into a basaltic matrix. Dominant minerals in basaltic lithologies are pyroxene with fine exsolution lamellae and calcic plagioclase laths up to 300 µm in length. Minor phases include silica, chromite, ilmenite, fayalite, troilite, and metallic iron. The meteorite contains several shock melt veins. Geochemistry: low-Ca pyroxene: Fs63.4±3.3Wo7.3±3.5 (Fs58.0-67.5Wo2.9-13.3, n=15, FeO/MnO=29-34); Ca-pyroxene: Fs44.8±3.7Wo28.7±4.3 (Fs40.2-50.7Wo21.4-34.1, n=16, FeO/MnO=29-37); calcic plagioclase: An82.9±1.9 (An78.9-86.5, n=15) | ||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
|
||||||||||||||||||||||||||||
Institutions and collections |
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011) Stehlik: Harald Stehlik, 1220 Wien, Austria (private address) |
||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||
References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
| ||||||||||||||||||||||||||||
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.
|