Meteoritical Bulletin: Entry for Northwest Africa 12802

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 10 Apr 2021
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Northwest Africa 12802

Basic information

Name: Northwest Africa 12802
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12802
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 65.2 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	Mesosiderite
Recommended:			Mesosiderite [explanation]

This is 1 of 205 approved meteorites classified as Mesosiderite. [show all]
Search for other: Mesosiderites, Metal-rich meteorites

Comments:

Approved 18 Aug 2019

Writeup

Writeup from MB 108:

Northwest Africa 12802 (NWA 12802)

(Northwest Africa)

Purchased: 2017

Classification: Mesosiderite

History: The meteorite was purchased from a local meteorite dealer in Ouarzazate, Morocco.

Physical characteristics: Brownish fragment without fusion crust.

Petrography: The meteorite displays a light brownish interior and is composed of silicate (about 60 vol%) and metallic (about 40 vol%) portions. The metallic lithology consists of most abundant kamacite and some taenite. The silica fraction is dominated by up to 0.5 µm sized low-Ca pyroxene, less abundant olivine, calcic plagioclase, and minor silica and merrillite.

Geochemistry: olivine: Fa_31.7±0.3, FeO/MnO=46±2, n=15; low-Ca pyroxene: Fs_28.4±0.3Wo_3.1±0.3, FeO/MnO=27±1, n=16; Ca-pyroxene: Fs_12.2±0.3Wo_43.0±0.2, n=10; plagioclase: An_90.9±1.4Ab_8.7±1.2Or_0.4±0.1, n=16

Data from:
  MB108
  Table 0
  Line 0:

Place of purchase:	Ouarzazate, Morocco
Date:	P 2017
Mass (g):	65.2
Pieces:	1
Class:	Mesosiderite
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	31.7
Ferrosilite (mol%):	28.4; 12.2
Wollastonite (mol%):	3.1; 43.0
Classifier:	A. Greshake, MNB
Type spec mass (g):	13.6
Type spec location:	MNB
Main mass:	Marcin Cimala
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

Direct link to this page