NORTH WEST AFRICA 13243
APHYRIC SHERGOTTITE MARTIAN METEORITE
ON OFFER ONE PIECE OF 38 GRAMS OF MARS
This unique Shergottite Martian meteorite is officially classified & approved as NWA 13243 and was recently discovered in Libya in January 2020 & classified by world renowned and profoundly respected Dr Anthony J. Irving and team at University of Washington.
THIS IS OFFICIALLY CLASSIFIED NWA 13243
CLASSIFIED AND APPROVED AS APHYRIC SHERGOTTITE MARTIAN METEORITE.
( NO PAIRING)
YOU ARE BUYING ONE PIECE OF 38 GRAMS
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TRULY A BEAUTIFUL MUSEUM QUALITY SHOWPIECE
FRESH FUSION CRUST WITH VELVETY TEXTURE AND TONS OF CONTRACTION CRACKS
OFFICIAL CLASSIFICATION DATA SOURCE:
THE METEORITICAL SOCIETY
INTERNATIONAL SOCIETY FOR METEORITICS AND PLANETARY SCIENCE
LUNAR AND PLANETARY INSTITUTE
METEORITICAL BULLETIN DATABASE
MetSoc Home Publications Contacts
Northwest Africa 13243
Basic information Name: Northwest Africa 13243
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13243
Observed fall: No
Year found: 2020
Mass:help 245 g
Recommended: Martian (shergottite)
Comments: Approved 28 Mar 2020
Writeup from MB 109:
Northwest Africa 13243 (NWA 13243)
Purchased: 2020 Jan
Classification: Martian meteorite (Shergottite)
History: A group of 20 similar-appearing stones found together in Libya was purchased by Mbark Arjdal in January 2020 from a Libyan dealer.
Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Relatively fine grained (mean grainsize 0.5 mm) aphyric assemblage of predominantly zoned clinopyroxene and maskelynite with accessory merrillite, ilmenite, ulvöspinel, pyrrhotite, alkali feldspar and rare silica polymorph. Sparse pockets of vesicular shock glass are present; in thin section these appear pale brown with a swirly texture and contain opaque inclusions.
Geochemistry: Subcalcic augite (Fs20.6-25.7Wo35.9-27.9, FeO/MnO = 28-30, N = 4), pigeonite (Fs35.9-27.9Wo12.8-17.3, FeO/MnO = 35-38, N = 6), maskelynite (An56.8-60.6Or1.7-1.1, N = 4).
Classification: Shergottite (aphyric).
Specimens: 22.7 g including one polished thin section at UWB; remainder with Mr. M. Arjdal
Place of purchase: Libya
Date: P 2020 Jan
Mass (g): 244.5
Class: Martian (shergottite)
Shock stage: high
Weathering grade: low
Ferrosilite (mol%): 20.6-25.7; 37.0-52.5
Wollastonite (mol%): 35.9-27.9; 12.8-17.3
Classifier: A. Irving, UWS, and P. Carpenter, WUSTL
Type spec mass (g): 22.7
Type spec location: UWB
Main mass: M. Arjdal
Comments: Work name Arj ZM0; submitted by A. Irving
and collections UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS: NASA ADS
Find references in Google Scholar: Google Scholar
This is 1 of 1498 approved meteorites from Libya (plus 22 unapproved names) (plus 2 impact craters)
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- Main Mineral/ Name Meteorite
- OFFICIALLY CLASSIFIED & APPROVED MARTIAN SHERGOTTITE
- Mineral Form/ Type Meteorite
- Achondrite Meteorite
- 38 g
- Origin (Country)