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Northwest Africa 13995
Basic information Name: Northwest Africa 13995
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13995
Observed fall: No
Year found: 2021
Country: Algeria
Mass:help 12 kg
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 Jun 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13995 (NWA 13995)

Algeria

Purchased: 2021 Feb

Classification: HED achondrite (Eucrite)

History: The holder (Xu Dengqin) purchased the sample from Aziz Zad, who found the meteorite in Algeria. The meteorite was purchased in February 2021

Petrography: The meteorite is a basaltic rock, composed of pigeonite(~30 vol.%, size from 20 to 2000 µm), augite(~15 vol.%, size from 20 to 2000 µm), and plagioclase (~50 vol.%, size from 20 to 2500 µm). with minor amounts of silica and troilite. It has ophitic to subophitic texture.

Geochemistry: Low-Ca pyroxene: Fs61.2±0.3Wo1.8±0.1, Fe/Mn=36.0±0.6, n=6; high-Ca pyroxene: Fs46.2±4.4Wo21.9±5.1, Fe/Mn=33.9±0.9, n=4; (EPMA).

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Feb
Mass (g):12000
Pieces:many
Class:Eucrite
Ferrosilite (mol%):61.2±0.3;46.2±4.4
Wollastonite (mol%):1.8±0.1;21.9±5.1
Classifier:Gao Tianjing
Type spec mass (g):35
Type spec location:IGCAS
Main mass:Xu Dengqin
Comments:Submitted by Li shijie
Institutions
   and collections
IGCAS: Institute of Geochemistry Chinese Academy of Sciences, Guiyang, China (institutional address; updated 27 Mar 2018)
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
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1250 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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