On Offer: 0.624g Martian Meteorite

Type: Nakhlite

Origin: Mars

Official name: NWA 10645

Description: A 0.624 gram crusted fragment of a beautiful and rare Martian meteorite. This is a stunning 0.624 gram specimen of a cumulate achondrite from Mars, with beautiful black crust on one side. This type of martian meteorite is known as a "Nakhlite" and was given the official name of NWA 10645. This was one of my earliest classifications.

What you get: 0.624g NWA10645 Martian Meteorite specimen as shown, membrane storage/display box, and signed Certificate of Authenticity

We offer a 100% no questions asked 30 day return policy.

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: 12 g

Classification
history:

Recommended:

Martian (nakhlite)

This is 1 of 18 approved meteorites classified as Martian (nakhlite). [show all]
Search for other: Martian meteorites

Comments:

Approved 15 May 2016

Writeup

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 Fa_88.1±0.8, Fe/Mn=41±1, n=5; augite Fs_31.9±10.2Wo_38.9±2.1, range Fs_24.1-48.9Wo_33.3-40.5, Fe/Mn=35±2, n=10; plagioclase An_22.9±2.7Ab_73.0±3.0Or_4.1±0.6, n=4; alkali feldspar An_3.3Ab_40.4Or_56.2, 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