ID 926994
Lot 17 | NWA 7034 – FROM MARS, THE RENOWNED WATER-RICH “BLACK BEAUTY”
Estimate value
$ 50 000 – 80 000
NWA 7034, is the 7,034th meteorite from the Northwest Africa region to be recovered, analyzed, peer reviewed and then published in the journal of record, the Meteoritical Bulletin. Black Beauty contains relatively large crystals of plagioclase (a calcium-aluminum silicate) and pyroxene (a calcium-magnesium-iron silicate). These large mineral grains are surrounded by fine-grained material that formed from rapidly cooling lava, most likely following a volcanic eruption. Rock and mineral fragments were incorporated into the flow during the eruption, giving the rock its brecciated appearance. Accessory minerals include chlorapatite, chromite, goethite, ilmenite, magnetite, maghemite, alkali feldspar and pyrite.
As it regards how scientists are certain this is from Mars, approximately forty years ago an exotic group of meteorites were believed to be planetary and most likely from Mars, but there was no proof until research in 1983 produced the smoking gun. Within a couple of these suspected Martian meteorites were tiny vugs and within these vugs were minute amounts of gas. The gas was analyzed and found to match perfectly the signature of the Martian atmosphere as reported by NASA’s Viking missions.
In 2018 the Meteoritical Society’s Nomenclature Committee agreed to reclassify the NWA 7034 pairing group as "Martian (polymict breccia)". The older term, "basaltic breccia," was determined unsuitable because research determined there existed a wide variety of lithologies in Black Beauty other than basalts.
With one perfectly rounded face sculpted by Earth’s atmosphere and two fractured surfaces, this is a notable offering of a specimen of Black Beauty, among the most exotic, scientifically important and sought-after samples of the planet Mars known.
Christie's would like to thank Dr. Alan E. Rubin at the Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles for his assistance in preparing this catalogue.
61 x 33 x 19mm (2.5 x 1.33 x 0.75 in.) and 55.02 grams
Category: | Martian meteorite, Meteorite |
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Category: | Martian meteorite, Meteorite |
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Address of auction |
CHRISTIE'S 20 Rockefeller Plaza 10020 New York USA | ||||||||||||||
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