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Northwest Africa 13694
Basic information Name: Northwest Africa 13694
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13694
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 900 g
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 365 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 30 Jan 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13694 (NWA 13694)

(Northwest Africa)

Purchased: 2018

Classification: Ordinary chondrite (LL3)

History: Purchased in 2018 by Nicholas Gessler from a meteorite dealer in Morocco.

Physical characteristics: 65 angular broken flakes and fragments, 3 displaying a relict fusion crust.

Petrography: (D. Sheikh, FSU) Specimen is composed of well-defined chondrules (Av. 750±100 µm, n=26) and a few clasts (up to 5 mm, n=2) set in a mostly opaque, slightly fine-grained matrix. Most chondrules contain devitrified mesostasis, although some preserve their primary isotropic glassy mesostasis.

Geochemistry: Olivine (Fa16.7±6.5, range Fa2.3-31.3, n=33), Cr2O3 in ferroan olivine (0.17±0.09, range 0.05-0.45, n=32), Low-Ca Pyroxene (Fs13.9±8.6Wo0.9±0.7, range Fs3.2-28.6Wo0.3-2.3, n=20).

Classification: Ordinary chondrite (LL3). LL group is due to average chondrule diameter and magnetic susceptibility (low value due to weathering).

Specimens: 25 grams at UCLA, main mass with Nicholas Gessler.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):900
Pieces:65
Class:LL3
Shock stage:S2
Weathering grade:W4
Fayalite (mol%):16.7±6.5
Ferrosilite (mol%):13.9±8.6
Wollastonite (mol%):0.9±0.7
Magnetic suscept.:3.58
Classifier:D. Sheikh, FSU
Type spec mass (g):25
Type spec location:UCLA
Main mass:Nicholas Gessler
Comments:Submitted by Daniel Sheikh
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Gessler: Nicholas Gessler, 2010 Calgary Lane, Los Angeles, CA 90077, United States (private address; updated 7 Jul 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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)

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