| MetSoc Home Publications Contacts |
|
||
|
||
| 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:  40.2 g | ||||||||||||||||||||||||||
| Classification history: |
This is 1 of 100 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 | ||||||||||||||||||||||||||
| Writeup |
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: |
|
||||||||||||||||||||||||||
| 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
| ||||||||||||||||||||||||||
Geography:
|
Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||
| Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
| ||||||||||||||||||||||||||
| Revision history: |
This lists important revisions made to data for this record.
| ||||||||||||||||||||||||||