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Nakhlites are a group of Martian meteorites, named after the first one, Nakhla meteorite . Nakhlites are igneous rocks that are rich in augite and were formed from basaltic magma about 1.3 billion years ago. They contain augite and olivine crystals.
3.2.3 The “Fractionated Atmospheric” Component. The nakhlites, like the shergottites, show enhanced 129 Xe/ 132 Xe ratios, but at a lower 84 Kr/ 132 Kr; that is, in the 129 Xe/ 132 Xe versus 84 Kr/ 132 Xe plot of Fig. 3.3 they plot above the mixing line between Chassigny and Mars atmosphere. This has led to the suggestion that they contain ...
Amorce Meteorite Museum. History: Purchased in December 2020 by Said Yousfi from a dealer near the Morocco-Algeria border and then acquired jointly by Mendy Ouzillou and Dustin Dickens. Physical characteristics: This somewhat friable specimen was found in several pieces (total weight 139.2 g, comprising stones of 66.1 g and 21.4 g plus other ...
Aug 17, 2021 · Newly analysed titanomagnetite–ilmenite (Tim–Ilm) intergrowths from Martian nakhlite meteorite Northwest Africa (NWA) 5790 yielded crystallisation temperature up to 1032 °C and oxygen fugacity (fO2) up to ΔQFM + 1.6, notably higher than previous estimates for nakhlite magmas (temperature < 950 °C, fO2 = ΔQFM − 0.5 to ΔQFM + 1). To interpret how the magma was reduced from ΔQFM − 0 ...
- Zilong Wang, Wei Tian, Yankun Di
- 2021
Jul 1, 2005 · There are no records associated with this record. The seven nakhlite meteorites are augite-rich igneous rocks that formed in flows or shallow intrusions of basaltic magma on Mars. They consist of euhedral to subhedral crystals of augite and olivine (to 1 cm long) in fine-grained mesostases.
Jul 20, 2005 · The seven nakhlite meteorites are augite-rich igneous rocks that formed in flows or shallow intrusions of basaltic magma on Mars. They consist of euhedral to subhedral crystals of augite and olivine (to 1 cm long) in fine-grained mesostases. The augite crystals have homogeneous cores of Mg′=63% and rims that are normally zoned to iron enrichment.
Sep 4, 2019 · Nakhlite meteorites are ~1.4 to 1.3 Ga old igneous rocks, aqueously altered on Mars ~630 Ma ago. We test the theory that water-rock interaction was impact driven. Electron backscatter diffraction demonstrates that the meteorites Miller Range 03346 and Lafayette were heterogeneously deformed, leading to localized regions of brecciation, plastic ...
