A Review of Research on Grove Mountains CM-Type Chondrites

CM chondrite is the most important carbonaceous containing abundant Ca, Al-rich inclusions (CAIs) and other interesting objects, which probably experienced early condensation processes in Solar Nebula environment later alteration parent body surroundings. Thus, it a vital raw material to explore formation evolution of System. Grove Mountains (GRV) chondrites have been collected from Antarctica by Chinese Antarctic Research Expedition (CARE) for nearly 20 years. In this paper, we review study GRV chondrites. total, there are eight named officially approved Meteoritical Society. Petrology mineral, matrix, CAIs, metal sulfide carefully reviewed. All meteorites similar characteristics with dominant component matrix. Phyllosilicate minerals generally developed The different altered mineral assemblages, contents chemical compositions show that these underwent varying degrees aqueous alteration, 020005 heavily chondrite. 020025 second heaviest samples extensive studies among It contains CAIs amoeboid olivine aggregates (AOAs). modal content about 1.0 vol% CAIs. findings some new types (such as hibonite-rich spinel-pyroxene forsterite-rich accretionary rims), AOAs complex, fine-grained P-bearing phase enrich 020025.