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Northwest Africa 7382
Basic information Name: Northwest Africa 7382
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7382
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 40.2 g
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  LL7
Recommended:  LL7    [explanation]

This is 1 of 59 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 4 Oct 2012
Writeuphelp
Writeup from MB 101:

Northwest Africa 7382 (NWA 7382)

Morocco

Purchased: Jan 2012

Classification: Ordinary chondrite (LL7)

History: Purchased by Michael Farmer from a Moroccan meteorite dealer in Tucson, January 2012.

Physical characteristics: Single complete stone, minor weathering, dark fusion crust, saw cut reveals many metal grains set in a greenish brown crystalline matrix, some green gemmy crystals up to 2 mm.

Petrography: (C. Agee, UNM) Microprobe examination of a polished epoxy mount shows olivine and orthopyroxene with protogranular to polygonal textures, some smaller olivines poikilitically enclosed in orthopyroxene, some larger olivines with euhedral shapes. Orthopyroxenes up to 2 mm, olivine up to 1 mm, interstitial plagioclase up to 200 μm. Kamacite, taenite and troilite up to 2 mm. Ubiquitous chromite, Cl-rich apatite detected.

Geochemistry: (C. Agee and M. Spilde, UNM) EMPA. Olivine Fa27.0±0.3, Fe/Mn=56±2, N=20; orthopyroxene Fs22.1±0.1Wo3.9±0.3, Fe/Mn=35±2 N=20; plagioclase Or2.9±0.9Ab80.7±5.7An16.4±6.6, n=9; chromite Cr/(Cr+Al)=0.89±0.01, Fe/Mn=45±1, n=4; kamacite 13 wt% Ni; taenite 40 wt% Ni.

Classification: Ordinary chondrite (LL7) texturally equilibrated polygonal crystals with triple junctions, recrystallized texture consistent with highest metamorphic grade for ordinary chondrites: type 7, no chondrules present.

Specimens: 8.32 g including a probe mount on deposit at UNM, MFarmer holds the main mass.

Data from:
  MB101
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P Jan 2012
Mass (g):40.2
Pieces:1
Class:LL7
Fayalite (mol%):27.0±0.3
Ferrosilite (mol%):22.1±0.1
Wollastonite (mol%):3.9±0.3
Classifier:C. Agee, UNM
Type spec mass (g):8.32
Type spec location:UNM
Main mass:MFarmer
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)
MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1370 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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