| MetSoc Home Publications Contacts |
|
||
|
||
| Northwest Africa 13836 | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Northwest Africa 13836 This is an OFFICIAL meteorite name. Abbreviation: NWA 13836 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass:  1.85 g | ||||||||||||||||||||||||||
| Classification history: |
This is 1 of 55 approved meteorites classified as Eucrite-cm. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||
| Comments: | Approved 25 Apr 2021 | ||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Northwest Africa 13836 (NWA 13836) (Northwest Africa) Purchased: 2020 Oct Classification: HED achondrite (Eucrite, cumulate) Petrography: (J. Gattacceca, CEREGE) Granular igneous rock with grain size 2 mm. Main minerals are equilibrated low-Ca pyroxene, and plagioclase. Ca-pyroxene are also present (to 100 µm). Pyroxenes do not show exslolution lamellae. Other minerals are silica polymorph (to 100 µm, and as 10 µm inclusions in plagioclase), merrillite, ilmenite, kamacite (at silicate grain rims, up to 200 µm, and as µm-sized blebs in the pyroxene) Geochemistry: Low-Ca pyroxene Fs42.8±2.4Wo7.7±1.1, FeO/MnO = 27.7±2.7 (n=10). Plagioclase An94.3±1.8Ab5.6±1.7Or0.1±0.1 (n=7). Chromite Cr# = 0.76 (n=2). Classification: Achondrite (eucrite, cumulate). Unusually metal-rich, with elongated metal grains up to 100 µm located in between silicate grains. Specimens: Type specimen at CEREGE. Main mass with Kuntz. | ||||||||||||||||||||||||||
| Data from: MB110 Table 0 Line 0: |
|
||||||||||||||||||||||||||
| Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) Kuntz: Fabien Kuntz, France; Website (private address) |
||||||||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||||||||
| References: | Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
| ||||||||||||||||||||||||||
| Geography: |
Statistics: This is 1 of 9921 approved meteorites from (Northwest Africa) (plus 1838 unapproved names) | ||||||||||||||||||||||||||