-40%
Meteorite**NWA 8159, Martian Augite Basalt**0.272 gram, RAREST METEORITE EVER!!!
$ 356.92
- Description
- Size Guide
Description
Hello up for auction is the Holy Grail of meteorites NWA 8159 classified as the only Martian Augite Basalt!!!!!!! This beautiful fragment weighs 0.272 grams, Saw cut reveals a very fine-grained, gray-green interior, with a few small melt veins present, but one vein was up to 1 mm thick, lithology offsets at vein boundaries suggest slight brecciation. This is the rarest meteorite ever, it's the only one with this classification and it's from the Red Planet!!! This martian meteorite is a fine grained olivine-bearing augite basalt that does not appear to be a SNC type although there are some aspects of it that resemble SNC.NWA 8159 is the only martian basalt type known to have augite as the sole pyroxene phase in its mineralogy. NWA 8159 is unique among martian meteorites in that it possesses both crystalline plagioclase and shock amorphized plagioclase, often observed within a single grain, the bracketing of plagioclase amorphization places the estimated peak shock pressures at >15 GPa and <23 GPa.
NWA 8159 stands apart from other martian meteorites in that it has an an early Amazonian age that is not represented in the SNCs, ALH 84001, or the NWA 7034 pairing group. NWA 8159 appears to be from an eruptive flow or shallow intrusion that is petrologically distinct from shergottite basalts, and its crystallization age argues that it is also temporally distant from the known time interval of shergottite magmatic activity. The decoupling of fO2 and LREE from classic SNC correlations also argues that NWA 8159 was possibly derived from a different mantle/crust source region suggesting the existence of a geochemically heterogeneous martian interior.
This meteorite comes with 2 COA cards, Streaming meteorites and Mark Lyon and display case. Thanks for your interest and take care.
I ONLY HAVE A FEW SMALL FRAGMENTS FOR SALE, THIS IS YOUR CHANCE TO OWN THE RAREST METEORITE EVER DISCOVERED IN MY OPINION. THIS METEORITE SELLS FOR ,000 PER GRAM ON THE RETAIL MARKET!!!! GOOD LUCK BIDDING!!!
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8159
Observed fall: No
Year found: 2013
Country: Morocco
Mass: 149.4 g
Classification
history:
Meteoritical Bulletin: MB 102 (2013) Martian (augite basalt)
Northwest Africa 8159 (NWA 8159)
Morocco
Purchased: 2013
Classification: Martian (augite basalt)
History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification in 2013.
Physical characteristics: Single stone, weathered exterior with yellow-brown patina, light colored desert soil coating on one side. Saw cut reveals a very fine-grained, gray-green interior, with a few small melt veins present, but one vein was up to 1 mm thick, lithology offsets at vein boundaries suggest slight brecciation.
Petrography: (C. Agee, UNM) Microprobe examination of a two polished mounts shows intergranular texture with approximately 50% augite, 40% plagioclase and maskelynite, 5% olivine. Augites have equant habits 10-200 μm with igneous zoning. Some augite crystals are rimmed with Fs-rich orthopyroxene. Plagioclase with shock-fractured prismatic laths up to 500 × 100 μm, but many are smaller (~50 × 10 μm), approximately half of the plagioclase has been converted to maskelynite, and is observed as unfractured, glassy casts. Olivine ~100 μm, most with resorbed or coronal grain boundaries. Ubiquitous magnetite, most grains 10-100 μm. Minor ilmenite, merrillite, Cl-apatite, and Cr-spinel. Trace calcite and barite assumed to be desert weathering products.
Geochemistry: (C. Agee, N. Muttik, F. McCubbin, UNM) EMPA. Augite Fs38.6±11Wo30.4±11.0, Fe/Mn=36±4, n=78; orthopyroxene rims Fs62.3±5.9Wo0.6±0.3, Fe/Mn=23±3, n=6; plagioclase An58.2±2.3Ab41.5±2.4Or0.3±0.2, n=7; maskelynite An58.1±1.8Ab41.6±1.7Or0.2±0.0, n=5; olivine Fa66.2±3.8, Fe/Mn=50±5, n=15; large shock melt vein (mean value from EMPA with 20 μm beam) SiO2=46.14±0.94, TiO2=0.67±0.09, Al2O3=10.63±1.22, Cr2O3=0.14±0.02, FeO=24.89±1.92, MnO=0.50±0.04, MgO=4.02±0.39, CaO=9.10±0.38, Na2O=1.80±0.17, P2O5=0.29±0.03, Cl=0.067±0.022 (all wt%), n=10. (Karen Ziegler, UNM) Oxygen isotope values of 5 acid-washed aliquots of bulk sample, 1.2, 1.2, 1.8, 2.0, 1.0 mg, gave δ17O = 2.406, 2.405, 2.093, 2.532, 2.329, δ18O = 4.089, 3.947, 3.328, 4.197, 3.880, Δ17O = 0.247, 0.321, 0.336, 0.316, 0.280 (linearized, all permil).
Classification: Martian (augite basalt). This is a martian meteorite based on oxygen isotopes, Fe/Mn of augite and olivine, and An-content of plagioclase and maskelynite. This martian meteorite is a fine grained olivine-bearing augite basalt that does not appear to be a SNC type although there are some aspects of it that resemble SNC. The augite and olivine compositions and crystallization trends are similar to nahklites, in particular MIL 03346. It does not resemble most shergottites in that pigeonite is absent, and orthopyroxene is only a minor phase present as Fe-rich rims on some augite grains, however plagioclase compositions are similar to shergottites, in particular the low potassium labradorites in QUE 94201. Shock pressures appear to have been lower than for shergottites, perhaps similar to Chassigny and some nakhlites, as only about half the plagioclase has been transformed to maskelynite. Magnetite is the dominant oxide phase in this meteorite, the only other martian meteorite that shares this aspect is basaltic breccia NWA 7034 and its pairings.
Specimens: 24.57 g including a two probe mounts on deposit at UNM, Reed holds 2.21 g, Sean Tutorow holds the main mass.
Data from:
MB102
Table 0
Line 0:
Place of purchase: Morocco
Date: P 2013
Mass (g): 149.39
Pieces: 1
Class: Martian (augite basalt)
Classifier: C. Agee, UNM
Type spec mass (g): 24.57
Type spec location: UNM
Main mass: Sean Tutorow
Comments: Submitted by C. Agee
Up until recently the orthopyroxenite ALH 84001 and basaltic breccia NWA 7034 were the only martian meteorites that did not fit within the common SNC types. However with the discovery of Northwest Africa (NWA) 8159, the diversity is expanded further with a third unique non-SNC meteorite type. The existence of meteorite types beyond the narrow range seen in SNCs is what might be expected from a random cratering sampling of a volcanically long-lived and geologically complex planet such as Mars. NWA 8159, a fine-grained, augite basalt, is a new type of martian meteorite, with SNC-like oxygen isotopes and Fe/Mn values, but having several characteristics that make it distinct from other known martian meteorite types. NWA 8159 is the only martian basalt type known to have augite as the sole pyroxene phase in its mineralogy. NWA 8159 is unique among martian meteorites in that it possesses both crystalline plagioclase and shock amorphized plagioclase, often observed within a single grain, the bracketing of plagioclase amorphization places the estimated peak shock pressures at >15 GPa and <23 GPa. Magnetite in NWA 8159 is exceptionally pure, whereas most martian meteorites contain solid-solution titano-magnetites, and this pure magnetite is a manifestation of the highest oxygen fugacity (fO2) yet observed in a martian meteorite. Although NWA 8159 has the highest fO2 of martian meteorites, it has a pronounced light rare earth (LREE) depletion pattern similar to that of very low fO2 basaltic shergottites such as QUE 94201. Thus NWA 8159 displays a striking exception to well documented correlation between fO2 and LREE patterns in SNC meteorites. Finally, NWA 8159 stands apart from other martian meteorites in that it has an an early Amazonian age that is not represented in the SNCs, ALH 84001, or the NWA 7034 pairing group. NWA 8159 appears to be from an eruptive flow or shallow intrusion that is petrologically distinct from shergottite basalts, and its crystallization age argues that it is also temporally distant from the known time interval of shergottite magmatic activity. The decoupling of fO2 and LREE from classic SNC correlations also argues that NWA 8159 was possibly derived from a different mantle/crust source region suggesting the existence of a geochemically heterogeneous martian interior.