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5.217g Martian Meteorite with Crust I Mars SHERGOTTITE - NWA 11668

Top Meteorite

  • $ 1,305.00


On Offer: 5.217g Martian Meteorite fragment with some crust.

Origin: MARS
Description: A 5.217 gram piece of Mars ejected by a meteorite impacting the surface of the Red Planet and hurling it to Earth. A lovely 5.217 gram specimen of a part of the SNC group of martian meteorites known as "Shergottite" NWA 11668. 
What you get: 5.217g NWA 11668 Martian Meteorite Specimen as shown, signed Certificate of Authenticity, shipping/storage membrane box.
I offer a 100% no questions asked 30 day return policy.  
Northwest Africa 11668
Basic information Name: Northwest Africa 11668
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11668 
Observed fall: No
Year found: 2018
Country: (Northwest Africa) 
Mass:help 20 g
Recommended:   Martian (shergottite)    [explanation]

This is 1 of 174 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 27 Mar 2018
Writeup from MB 107: 

Northwest Africa 11668 (NWA 11668)

(Northwest Africa)

Purchased: 2018

Classification: Martian meteorite (Shergottite)

History: The meteorite was purchased in Tindouf, Algeria, from a Sahrawi dealer.

Physical characteristics: Four dark-green pieces partly covered with fusion crust.

Petrography: The meteorite is a medium grained basalt predominantly composed of up to 1.5 mm sized pyroxene and plagioclase grains. Pyroxene is intensely fractured pigeonite and augite displaying mottled compositional zoning. Plagioclase is completely transformed into compositionally homogeneous maskelynite. Minor phases are ilmenite, ulvöspinel, pyrrhotite and some Si-rich mesostasis.

Geochemistry: pigeonite: Fs53.7±4.4Wo14.3±2.4 (Fs35.5-59.6Wo9.7-20.0, n=38, FeO/MnO=33-43); augite: Fs26.2±7.0Wo32.2±3.9 (Fs21.1-48.9Wo20.6-37.8, n=32, FeO/MnO=27-40); feldspar: An56.8Ab42.0Or1.2, n=15

Classification: Martian (basaltic shergottite)

Data from:
  Table 0
  Line 0:
Place of purchase: Tindouf, Algeria
Date: P 2018
Mass (g): 20
Pieces: 4
Class: Martian (shergottite)
Shock stage: strong
Weathering grade: low
Ferrosilite (mol%): 53.7; 26.2
Wollastonite (mol%): 14.3; 32.2
Classifier: A. Greshake, MNB
Type spec mass (g): 4.2
Type spec location: MNB

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