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Northwest Africa 13385
Basic information Name: Northwest Africa 13385
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13385
Observed fall: No
Year found: 2015
Country: Morocco
Mass:help 1040 g
Classification
  history:
Recommended:  CVred3    [explanation]

This is 1 of 12 approved meteorites classified as CVred3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 5 Sep 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13385 (NWA 13385)

Drâa-Tafilalet, Morocco

Purchased: 2015

Classification: CVred3

History: Mohamed Boukbot found the samples in the desert 3.8 km NE of the town of Mezguida, Drâa-Tafilalet, Morocco. Many samples were distributed to a number of dealers and subsequently purchased by John Higgins in 2015.

Physical characteristics: Type specimens are dark-light brown and have an irregular-shaped exterior. The cut face shows the interior is composed of abundant chondrules and refractory inclusions. The color variation of the interior of some stones show regions stained by FeOH minerals indicating variable weathering.

Petrography: Description and classification (A. Love, App): Sample shows brecciated chondritic texture composed of distinct chondrules with an average diameter of 640 μm (n=51), fragments, refractory inclusions (CAIs and AOAs) and a single xenolithic clast set within a fine-grained opaque oxidized matrix (~55 vol%). Some porphyritic chondrules contain rounded inclusions of FeNi metal. The 2 × 3mm lithic clast contains unequilibrated chondrules with an average diameter of 112 μm (n=10).

Geochemistry: (A. Love, App) Olivine Fa6.4±8.0 (Fa0.3-33.0, n=18); low-Ca pyroxene Fs1.2±0.4Wo1.8±1.4 (Fs0.7-2.2Wo0.8-2.8, n=12); high-Ca pyroxene Fs1.8Wo31.1 (n=1). Sulfides contain 0.31±0.24 wt% Ni, n=18.

Classification: Carbonaceous chondrite (CVred3). Chondrule diameter, modal abundance of matrix, and abundant CAIs indicate sample is CV3. Presence of FeNi metal in silicates, wt% Ni in sulfides and magnetic susceptibility indicate the sample belongs to the CVred group (Bonal et al. (2020)Gattacceca et al. (2020)).

Specimens: John Higgins holds the main mass. Many slices and endcuts totaling 37.82 g and a polished thin section and mount are on deposit at App.

Bibliography:
  • Bonal L., Gattacceca J., Garenneac A., Eschriga J., Rochette P., and Krämer Ruggiu L. (2020) Water and heat: New constraints on the evolution of the CV chondrite parent body. Geochim. Cosmochim. Acta 276 363-383. (link)
  • Gattacceca J.,Bonal L.,Sonzognia C., and Longereya J. (2020) CV chondrites: More than one parent body. Earth Planet. Sci. Letts. 547, 116467. (link)
Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Drâa-Tafilalet
Place of purchase:Morocco
Date:P 2015
Mass (g):1040
Pieces:many
Class:CVred3
Shock stage:C-S2
Weathering grade:moderate
Fayalite (mol%):6.4±8.0
Ferrosilite (mol%):1.2±0.4; 1.8
Wollastonite (mol%):1.8±1.4; 31.1
Magnetic suscept.:4.23
Classifier:A. Love, App
Type spec mass (g):37.82
Type spec location:App
Main mass:John Higgins
Finder:Mohamed Boukbot
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Robert Smart   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2 approved meteorites from Drâa-Tafilalet, Morocco
     This is 1 of 1670 approved meteorites from Morocco (plus 23 unapproved names) (plus 1 impact crater)

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