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Martian Meteorite | Mars Nakhlite 0.57g - NWA 10645

Top Meteorite

  • $ 57.00


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On Offer: MARTIAN METEORITE 0.57g
Type: NAKHLITE
Origin: MARS
Official name: NWA 10645
Description: A 0.57 gram piece of Mars ejected by a meteorite impacting the surface of the Red Planet and hurling it to Earth. A lovely 0.57 gram specimen of a very rare part of the SNC group of martian meteorites known as "Nakhlite" NWA 10645.
Whenever possible, Top Meteorite acquires meteorites direct from the source allowing us to offer exceptional quality specimens at very reasonable prices.
What you get: 0.57g NWA10645 Martian Meteorite Specimen as Shown, Membrane Storage/Display Box, signed 5x7 double sided color Certificate of Authenticity 
I offer a 100% no questions asked 15 day return policy.
 
ID - 10645-MN20170006
SEE OFFICIAL METEORITICAL SOCIETY ENTRY BELOW
Northwest Africa 10645
Basic information Name: Northwest Africa 10645
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10645 
Observed fall: No
Year found: 2016
Country: (Northwest Africa) 
Mass:help 12 g
Classification
  history:
Recommended:   Martian (nakhlite)    [explanation]

This is 1 of 18 approved meteorites classified as Martian (nakhlite).   [show all]
Search for other: Martian meteorites
Comments: Approved 15 May 2016
Writeuphelp
Writeup from MB 105: 

Northwest Africa 10645 (NWA 10645)

(Northwest Africa)

Purchased: 2016

Classification: Martian meteorite (Nakhlite)

 

History: Purchased by Dustin Dickens, February 2016, from a Moroccan dealer.

 

Physical characteristics: The exterior is partially covered by black fusion crust. Freshly broken surfaces reveal a mixture of mm-sized dark-green pyroxene grains and interstitial cream-colored feldspar.

 

Petrography: (C. Agee, UNM) This meteorite has an ophitic texture consisting of 75% augite, 15% feldspar, and 5% olivine. Some augite crystals are prismatic and up to 2 mm in length. There are two feldspars present, oligoclase and alkali feldspar, no maskelynite was observed; feldspar commonly occupies interstices between augite grains. Augites show igneous zoning with Fs-rich rims, olivines are fayalitic and fairly uniform in composition. Apatite, ilmenite, and titanomagnetite were observed.

 

Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa88.1±0.8, Fe/Mn=41±1, n=5; augite Fs31.9±10.2Wo38.9±2.1, range Fs24.1-48.9Wo33.3-40.5, Fe/Mn=35±2, n=10; plagioclase An22.9±2.7Ab73.0±3.0Or4.1±0.6, n=4; alkali feldspar An3.3Ab40.4Or56.2, n=1.

 

Classification: Martian (nakhlite). This is a martian meteorite based Fe/Mn of augite and olivine, and on the composition of the plagioclase. It is a nakhlite based on the high percentage of augite present. Paired with NWA 10153.

 

Specimens: 2.5 g including a probe mount on deposit at UNM; Dustin Dickens holds the main mass.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase: Morocco
Date: P 2016
Mass (g): 12
Pieces: 1
Class: Martian (nakhlite)
Shock stage: moderate
Weathering grade: low
Fayalite (mol%): 88.1±0.8
Ferrosilite (mol%): 31.9±10.2
Wollastonite (mol%): 38.9±2.1
Classifier: C. Agee, UNM
Type spec mass (g): 2.5
Type spec location: UNM
Main mass: Dustin Dickens
Comments: Field name TMS-1; submitted by C. Agee, UNM

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