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Martian Meteorite Slice 14.95g - Peridotitic Shergottite NWA 13366

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  • $ 2,990.00



Dimensions: Approximately 56.28mm x 48.17mm x 2mm


Origin: MARS

Official name: NWA 13366

Description:  This is a spectacular 14.95 gram slice of new peridotitic martian meteorite NWA 13366 displaying exceptional aesthetics. At 14.95 grams this amazing full slice of Martian Peridotitic Shergottite meteorite is well suited for any collection, public or private. This is an igneous cumulate meteorite with the original martian material having been created when olivine and pyroxine crystals forming in a slowly cooling magma chamber on Mars started to sink (or possibly float up) and incrementally add mineral crystal after mineral crystal until it cooled enough to solidify into this gorgeous extraterrestrial ultramafic cumulate material that was eventually ejected by a large meteorite hitting Mars. An exceptional slice of an exceptional planetary specimen. Martian meteorites are ejected by another meteorite impacting the surface of the 4th planet and hurling material out into the void with the occasional bit here-and-there finding its way deeper into the gravity well of the Solar System and eventually Earth.

ID: MARTIANSL13366-20-13.31-01

Northwest Africa 13366
Basic information Name: Northwest Africa 13366
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13366
Observed fall: No
Year found: 2019
Country: Algeria
Mass: 417 g
Recommended:   Martian (shergottite)

This is 1 of 229 approved meteorites
Comments: Approved 2 Aug 2020
Writeup from MB 109:

Northwest Africa 13366 (NWA 13366)


Purchased: 2019

Classification: Martian meteorite (Shergottite)

History: Purchased from a nomad in Algeria in 2019 and sent to Dustin Dickens at the Tucson Gem and Mineral Show, February 2020.

Physical characteristics: Single stone, saw cut reveals an ultramafic cumulate rock with ophitic to poikilitic textures with mm-size pale yellow and dark gray grains.

Petrography: (C. Agee, UNM) Microprobe examination shows approximately 60% olivine, 35% pyroxene, and 5% maskelynite. Two distinct pyroxene trends are present 1) Mg-rich low calcium pyroxene trending to slightly more Fe-rich pigeonite, 2) Mg-rich augite trending to more Ca-rich augite. Ilmenite, Fe-sulfide, and merrillite are minor ubiquitous phases.

Geochemistry: (C. Agee, UNM) Olivine Fa34.5±2.6, Fe/Mn=50±3, n=15; low Ca-pyroxene Fs24.4±4.6Wo5.9±3.8, Fe/Mn=30±2, n=9; augite Fs16.0±1.2Wo35.0±3.1, Fe/Mn=24±1, n=4; maskelynite An53.7±1.1Ab44.9±1.2Or1.4±0.1, n=6.

Classification: Martian peridotitic shergottite. Macroscopic textural appearance similar to NWA 1950 and ALHA 77005. Paired with NWA13325

Specimens: 20 g on deposit at UNM, Dustin Dickens holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase: Algeria
Date: P 2019
Mass (g): 417
Pieces: 1
Class: Martian (shergottite)
Shock stage: high
Weathering grade: low
Fayalite (mol%): 34.5±2.6
Ferrosilite (mol%): 24.4±4.6, 16.0±1.2
Wollastonite (mol%): 5.9±3.8, 35.0±3.1
Classifier: C. Agee, UNM
Type spec mass (g): 20
Type spec location: UNM
Main mass: Dustin Dickens
Comments: Field name DD-65; submitted by C. Agee, UNM
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar: <

Coordinates: Unknown.

     This is 1 of 1015 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)
Also see:
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