Lunar Meteorite - Highland Feldspathic Breccia
We've created an interactive 3D model of the 16.9 kilogram (37 pound) lunar meteorite to allow everyone to experience this truly exceptional piece of the Moon. It was given the official name of NWA 15368 by the Meteoritical Society's Nomenclature Committee, and has informally been dubbed Artemis 16.9 in commemoration of NASA's return to the Moon. Coming to auction March 10, 2023 | HERITAGE AUCTIONS
"The Moon has always been a place of wonder for all of us. Every culture has told the story of the Moon in their own way. It's a collective cumulative story told and retold over millennia. Together in an ancient past we looked up as a planet to it's guiding light, and marveled at its tidal forces and predictive power. In these moments our inevitable journey began. As we return to the Moon with NASA's Artemis missions, and study the pieces we have here on Earth like NWA 15368, we contribute to this collective narrative. Together we take the next bold steps, looking to the Moon again and setting our sights on a permanent staging ground for the human race to explore and study the Solar System and beyond."
Name: Northwest Africa 15368
Classification history: Lunar (frag. breccia)
Comments: Approved 12 Nov 2022
Writeup from: MB 111
Purchased: January 2021
Classification: Lunar meteorite (frag. breccia)
Place of purchase: Mali
Date: January 2021
Mass After Analysis: 16975.5g
Class: Lunar (frag. breccia)
Shock stage: high
Weathering grade: moderate
History: Found in Mali by camel shepherds in January 2021 and subsequently purchased by Ahmed Salek and sold to an anonymous collector in the US.
Physical characteristics: A single stone with a dark exterior, one side partially covered in caliche. Cut surface reveals a fragmental breccia with many lithic clasts set in a glassy dark-gray ground mass.
Petrography: (D. Dickens, NMMS and A. S. Bell, CUB) This meteorite is a clast-rich polymict breccia with subhedral lithic fragments embedded in a fine-grained groundmass. Fragmental clasts sizes range from <0.1 mm to >6 mm and are primarily comprised of plagioclase, low-Ca pyroxene, pigeonite, augite, and olivine. Minor phases include kamacite and ilmenite. This meteorite is shocked with impact melt textures present.
Geochemistry: (D. Dickens, NMMS and A. S. Bell, CUB) olivine Fa38.0±2.6, Fe/Mn=100±11.4, n=8; lo-Ca pyroxene Fs20.7±0.1,Wo4.0±0.1, Fe/Mn=54±2, n=2; pigeonite Fs30.1±5.2,Wo9.5±3.7, Fe/Mn=54±1, n=3; augite Fs16.9±1.1Wo36.5±2.8, Fe/Mn=45±1 n=2; plagioclase An95.9±3.1 Ab2.9±0.7 Or1.2±3.3, n=15.
Fe/Mn Plot for NWA 15368 Pyroxenes | Dr. A. S. Bell, CU Boulder
Elemental X-Ray Maps for NWA 15368 | Dr. A. S. Bell, CU Boulder
Fayalite (mol%): 38.0±2.6
Ferrosilite (mol%): 20.7±0.1, 30.1±5.2, 16.9±1.1
Wollastonite (mol%): 4.0±0.1, 9.5±3.7, 36.5±2.8
Classifier: Dustin Dickens, NMMS and Aaron S. Bell, CUB
Type spec mass (g): 40
Type spec location: Cascadia
Main mass: Anonymous collector
Comments: Submitted by Dustin Dickens
Classification: Lunar fragmental breccia
Specimens: 40 g with probe mount on deposit at Cascadia, 40 g with probe mount on deposit at CUB, anonymous collector holds the main mass.
PRESS KIT / FILE LINKS
Artemis 16.9 - Lunar Meteorite 1 page Quick Facts
Coming to auction March 10, 2023 | HERITAGE AUCTIONS