Meteoritical Bulletin: Entry for Northwest Africa 7015

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Northwest Africa 7015

Basic information

Name: Northwest Africa 7015
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7015
Observed fall: No
Year found: 2011
Country: Morocco
Mass: 888 g

Classification
history:

Meteoritical Bulletin:	MB 100	(2012)	LL4
Recommended:			LL4 [explanation]

This is 1 of 385 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 3 Nov 2011

Writeup

help

Writeup from MB 100:

Northwest Africa 7015 (NWA 7015)

Morocco

Found: 2011

Classification: Ordinary chondrite (LL4)

History: Purchased by Matt Morgan in 2011 at the Denver Gem and Mineral Show

Physical characteristics: Two pieces that fit together to form one complete stone. Fusion crusted, saw cut reveals light gray interior, numerous chondrules, clasts, and metal grains set in a fine grained matrix. Slightly weathered, light oxidation of metal grains.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows olivine and low-Ca pyroxene, numerous chondrules and breccia clasts. Mesostasis in some chondrules, also fine-grained plagioclase with high FeO content, minor high-Ca pyroxene, ubiquitous troilite and kamacite.

Geochemistry: (C. Agee and N. Wilson, UNM) EMPA. Olivine Fa_28.1±0.2, Fe/Mn=59±3, N=7, low-Ca pyroxene Fs_23.6±1.6Wo_2.2±1.1, Fe/Mn=35±3, N=4, high-Ca pyroxene Fs₁₀Wo₄₄, Fe/Mn=28, plagioclase Ab_84±2N=3, kamacite (wt%): Fe=92.1, Ni=5.2, and Co=2.7.

Classification: Ordinary chondrite (LL4), type 4 based on Fa PMD=1% Fs PMD=7% (Huss et al. 2006) and mean Fa content (Rubin 2005), slightly weathered.

Specimens: MtMorgan holds the main mass, 24.6 g including a probe mount on deposit at UNM.

Data from:
  MB100
  Table 1
  Line 1576:

Place of purchase:	Denver
Date:	2011
Mass (g):	888
Pieces:	2
Class:	LL4
Fayalite (mol%):	28.1±0.2
Ferrosilite (mol%):	23.6±1.6
Wollastonite (mol%):	2.2±1.1
Classifier:	C. Agee, UNM
Type spec mass (g):	24.6
Type spec location:	UNM
Main mass:	MtMorgan
Comments:	Submitted by C. Agee

Institutions
and collections

UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
MtMorgan: Matt Morgan, Mile High Meteorites, P.O. Box 151293, Lakewood, CO 80215-9293, United States; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)

Find references in NASA ADS:
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Geography:

Morocco

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 1871 approved meteorites from Morocco (plus 24 unapproved names) (plus 1 impact crater)

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