|
Northwest Africa 13566 | |||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 13566 This is an OFFICIAL meteorite name. Abbreviation: NWA 13566 Observed fall: No Year found: 2020 Country: Morocco Mass: 826 g | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 396 approved meteorites classified as LL4. [show all] Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||
Comments: | Approved 16 Dec 2020 | ||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 13566 (NWA 13566) Morocco Purchased: 2020 Classification: Ordinary chondrite (LL4) History: The sample was purchased by Carlos Muñecas (Expometeoritos) in 12 July 2020 from a dealer in Ouarzazate, Morocco. Physical characteristics: Sample has a triangular prism shape and has a dark brown, wind-ablated exterior. The cut face of the interior is dark gray and shows dispersed metal grains in a chondritic textured host. Petrography: Description and classification (A. Love, App) Chondrules (with an average apparent diameter of 640 µm, n=59) set within a nearly opaque, recrystallized matrix containing abundant FeS veinlets. Plagioclase occurs as isolated intergrowths. Additional minerals: apatite, chromite, troilite, pentlandite, rare (<1%) FeNi metal. Geochemistry: (A. Love, App) Olivine (Fa35.3±0.7, Fe/Mn=66.5±0.9, n=10); low-Ca Pyroxene (Fs28.0±3.6Wo1.2±0.5 (Fs17.2-30.2Wo0.5-2.4), Fe/Mn=44.6±3.8, n=11); pigeonite(Fs23.9Wo13.5, Fe/Mn=28.7, n=1); high-Ca pyroxene (Fs13.5Wo31.5, Fe/Mn=37.7, n=1). Classification: Ordinary chondrite (Shock darkened LL4, C-S3, W1). Fa and Fs are outside the normal range for LL chondrites. Fe/Mn of olivine and pyroxene and average chondrule diameter fall just outside the range of LL ordinary chondrites. Magnetic susceptibility falls within the range for LL chondrites. Specimens: Carlos Muñecas (Expometeoritos) holds the main mass. A slice weighing 20. 1g and a polished thin section are on deposit at App. | ||||||||||||||||||||||||||||||||
Data from: MB109 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||||
Institutions and collections |
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013) |
||||||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
| ||||||||||||||||||||||||||||||||
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.
|