Introduction: Twelve Martian meteorites that have been recovered so far are classified into five groups (basalt, lherzolite, clinopyroxenite, dunite, or-thopyroxenite) mainly from petrology and chemistry [e.g., 1]. Among them, the dunite and orthopyroxenite groups consist of only one meteorite, respectively (dunite: Chassigny, orthopyroxenite: ALH84001). The basalt group is the largest group an...

Martian meteorites provide crucial insights into Martian evolution and interplanetary mass transfer, including the potential for exogenesis. ALH84001 is the oldest Martian meteorite discovered so far, and has been used to derive important conclusions about Martian surface temperatures and very low-temperature Mars-to-Earth transfer. To better constrain the thermal evolution and shock metamorphi...

In this work, the geochemical characterization of olivine-phyric Martian shergottite LAR 12095 was performed by using two complementary analytical techniques: micro-Raman and micro-energy dispersive X-ray fluorescence spectroscopies. Thanks to methodology, olivine, pyroxene, ilmenite were detected as primary minerals from Mars. Maskelynite, hematite, anatase, chromite, merrillite, oxidized mack...

Introduction: QUE 94201 (QUE) is a basaltic shergottite containing subequal amounts of pyroxene and plagioclase, the latter having been converted to maskelynite by shock (Fig. 1) [e.g., 1-3]. Pyroxene occurs as elongate subhedral to euhedral grains up to several mm in length. It has extensive and complex zoning (Fig 1). Typical grains have Mg-rich pigeonite cores mantled by Mg-rich augite, whic...

The Chang'e-5 (CE-5) materials represent the youngest returned lunar samples. We performed a detailed Raman spectroscopic survey (1259-point modal analysis) to evaluate mineralogical characteristics of CE-5 soils, constraining source and shock effects these unique mineral chemistry (e.g., Mg#3-60 for mafic minerals) abundance (first distinguishing basaltic feldspathic glasses) mare soils are di...

NWA 2700 and NWA 2977 Paired With NWA 773: NWA 2700 is a 31.7 gram stone consisting of small gabbro clasts plus regolith breccia matrix (see Figure 1). The olivine gabbro contains ~50 vol.% olivine (Fa29.3-34.7; FeO/MnO = 94), pigeonite (Fs2228.3Wo5.6-10; FeO/MnO = 52), augite (Fs13.2Wo38.5), plagioclase and minor maskelynite (An89), Ba-rich alkali feldspar (Or92An4, BaO up to 8.9 wt.%), Crspin...

erna77fi)5, a unique achondrite found in the Allan Hills area, Antarctica, contains cumulus olivine and chromite phenocyrsts poikiliticaily enclosed by pyroxene and maskelynite. Petrofabric analysis on olivine shows a weak preferred orientaticin primarity consisting of a YZ foliation plane containing a weak [001] lineation. Secondary maxima are attributed to the development of exaggerated {ll0}...

A fragment of the NWA 2975 Martian meteorite, an enriched basaltic shergottite, was analysed to complete its geochemical characterisation performed 10 years ago. By this means, feasibility employed techniques in a combined way for present and future space exploration missions can be tested. For aim, Raman spectroscopy used supported by micro energy dispersive X-ray fluorescence (μ-EDXRF) laser-...

Introduction: In heavily shocked stony meteorites, plagio-clase in the host rock has transformed into glass (maskelynite) in a solid-state reaction. So far, the formation pressure of maske-lynite has been estimated only based on dynamic high-pressure experiments [1]. However, duration of pressure in laboratory shock experiments is significantly smaller (10-6 sec) than that in meteorite parent b...