Meteoritical Bulletin: Entry for Northwest Africa 7078

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Northwest Africa 7078

Basic information

Name: Northwest Africa 7078
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7078
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass: 86 g

Classification
history:

Recommended:

LL7 [explanation]

This is 1 of 98 approved meteorites classified as LL7. [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 26 Mar 2022

Writeup

Writeup from MB 111:

Northwest Africa 7078 (NWA 7078)

(Northwest Africa)

Purchased: 2011

Classification: Ordinary chondrite (LL7)

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

Physical characteristics: Sixty one small brownish fragments some with minor fusion crust.

Petrography: The meteorite shows a highly recrystallized texture with abundant 120° grains boundaries. Low-Ca pyroxene and feldspar often poikilitically enclose rounded olivine grains. Grain sizes vary from 30 to 200 µm. Minor phases include troilite, chromite, and merrillite. FeNi metal is rare. No relict chondrules detected.

Geochemistry: olivine: Fa_28.1±0.2(Fa_27.9-28.4, n=7); low-Ca pyroxene: Fs_23.2±0.2Wo_3.4±0.4(Fs_23.0-23.5Wo_2.8-3.9, n=10); Ca-pyroxene: Fs_11.7±0.5Wo_39.3±0.6(Fs_10.9-12.6Wo_38.1-40.0, n=7); feldspar: An_8.7-18.0Ab_78.7-86.0Or_3.1-5.9, n=6

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2011
Mass (g):	86
Pieces:	61
Class:	LL7
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	28.1
Ferrosilite (mol%):	23.2; 11.7
Wollastonite (mol%):	3.4; 39.3
Classifier:	A. Greshake, MNB
Type spec mass (g):	17.2
Type spec location:	MNB
Main mass:	Mirko Graul
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. 111, in preparation (2022)

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

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Jörg-Florian Jensch
Michael S. Scherman
The Wilcox Collection of Meteorites
Woreczko Jan & Wadi

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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