Magmatic cristobalite and quartz in the NWA 856 Martian meteorite

Unusual Interaction between Martian Surface and Magmatic Reservoirs: Volatiles in Impact Melts in the Tissint Meteorite

VOLATILES IN IMPACT MELTS IN THE TISSINT METEORITE. Yang Chen, Yang Liu, Yunbin Guan, John M. Eiler, Chi Ma, George R. Rossman, and Lawrence A. Taylor. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; Geol. & Planet. Sci., California Institute of Technology, Pasadena, CA 91125, USA; Planet. Geosci. Inst., Dept. of Earth & Planet. Sci., Univ. of Tenn., Knox...

Rare-earth Minerals in Martian Meteorite Nwa 7034/7533: Evidence for Fluid-rock Interaction in the Martian Crust

Carbonates in the Martian meteorite

Despite evidence for liquid water at the surface of Mars during the Noachian epoch, the temperature of early aqueous environments has been impossible to establish, raising questions of whether the surface of Mars was ever warmer than today. We address this problem by determining the precipitation temperature of secondary carbonate minerals preserved in the oldest known sample of Mars’ crust—the...

Monazite Dating of Lunar Meteorite Nwa

Introduction. According to their textural and geochemical similarity it was suggested previously that the lunar meteorite NWA 4734 could be launch paired with Antarctic Mare basalts (LAP 02205/224/226/436-03632-04841) themselves possibly paired with NWA 032/470 lunar meteorites despite their different textures (1-5). A possible clue about the pairing issue is evidently their age. Method : After...

Silica Dust, Crystalline, in the Form of Quartz or Cristobalite

Silica, or silicon dioxide (SiO2), is a group IV metal oxide, which naturally occurs in both crystalline and amorphous forms (i.e. polymorphic; NTP, 2005). The various forms of crystalline silica are: α-quartz, β-quartz, α-tridymite, β-tridymite, α-cristobalite, β-cristobalite, keatite, coesite, stishovite, and moganite (NIOSH, 2002). The most abundant form of silica is α-quartz, and the term q...