|
Northwest Africa 11594 | |||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 11594 This is an OFFICIAL meteorite name. Abbreviation: NWA 11594 Observed fall: No Year found: 2016 Country: Algeria Mass: 106.8 g | ||||||||||||||||||||
Classification history: |
This is 1 of 598 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||
Comments: | Approved 9 Feb 2018 | ||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11594 (NWA 11594) Algeria Purchased: 2016 May 1 Classification: HED achondrite (Eucrite) History: Purchased by Miao Bing-an in 2016 in Morocco. Physical characteristics: On the unbroken surfaces, black fusion crust is partly preserved. The meteorite is a polymict breccia consisting of fragments of medium- to coarse-grained metamorphosed gabbroic rocks and fine-grained subophitic basaltic rocks. Dimensions: 5.5 × 6.0 × 7.2 cm. Petrography (L. Huang, B. Miao, H. Chen, GUT): Breccia containing a variety of basaltic lithologies, with <10 vol % cumulate lithologies. Cumulate eucrite lithologies are coarse grained (~0.6-1 mm) gabbros composed principally of low-Ca zoned clinopyroxene and calcic plagioclase. Basaltic breccia lithologies are fine grained, have mostly subophitic textures, and contain very fine-grained vitrophyric textured basaltic lithologies. A silica phase is commonly present. Accessories are ilmenite, chromite, troilite and rare iron metal. Geochemistry (L.Huang, B. Miao, H. Chen, GUT): Bulk pyroxene: Fe/Mn=35.2. Low-Ca pyroxene of cumulate lithologies: median compositions are Mg#=51.7, Fs46.6Wo3.7 (n=20). Low-Ca pyroxene of basaltic lithologies: median compositions are Mg#=45.2, Fs52.6Wo4.1 (n=43). High-Ca pyroxene of basaltic lithologies: median compositions are Mg#=47.7, Fs38.5Wo27.7 (n=45). Plagioclase: An73.2-94.1Or0.23-2.17,median An88.2Or0.76 (n=10). Classification: Basaltic polymict brecciated eucrite Specimens: 34.6 g and polished thin section are deposited in GUT | ||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
|
||||||||||||||||||||
Institutions and collections |
GUT: College of Earth Sciences, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, China (institutional address; updated 18 Oct 2012) |
||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
| ||||||||||||||||||||
Photos: |
| ||||||||||||||||||||
Geography: |
Statistics: This is 1 of 1344 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||
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.
|