Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536
نویسندگان
چکیده
منابع مشابه
Origin of a metamorphosed lithic clast in CM chondrite Grove Mountains 021536
A metamorphosed lithic clast was discovered in the CM chondrite Grove Mountains 021536, which was collected in the Antarctica by the Chinese Antarctic Research Exploration team. The lithic clast is composed mainly of Fe-rich olivine (Fo62) with minor diopside (Fs9.7–11.1Wo48.3–51.6), plagioclase (An43–46.5), nepheline, merrillite, Al-rich chromite (21.8 wt% Al2O3; 4.43 wt% TiO2), and pentlandit...
متن کاملth Lunar and Planetary Science Conference ( 2009 )
Introduction: Equilibrated lithic clasts in unequilibrated chondrites probably represent thermal metamorphism in the early solar system before or during accretion of chondritic parent bodies. Lithic clasts with equilibrated features are rare in unequilibrated chondrites and their origins are not well-understood [1]. Recently, we observed an unusual lithic clast with thermal-metamorphosed featur...
متن کاملClast-rich H-chondrite Impact Melts
Introduction: The H-chondrite parent asteroid provides the second-most abundant type of meteorites that currently reach Earth's surface [1]. These rocks recorded their parent asteroid's collisional history and melted H-chondrites chronicle the most severe cratering events. Samples and Methods: Seven samples of clast-rich impact melt rocks from the La Paz Icefield, Antarctica were analyzed in Pl...
متن کاملA Metamorphosed Olivine-rich Aggregate in the Cv3 Carbonaceous Chondrite
A metamorphosed olivine-rich aggregate was found in the least metamorphosed CV3 Y-86009. Although such aggregates were observed in CV3 Mokoia and Vigarano, and CO (CM) Acfer 094 [1-3], their precursors and formation mechanism have not been fully understood. Here, we report mineralogical observations of an olivine-rich aggregate in the Y-86009. The olivine-rich aggregate is embedded in matrix. I...
متن کاملChemical characterization of a “mysterite’‘-bearing clast from the Supuhee chondrite .&NEW
HIGucIiI et al. (1977) proposed the existence of Tl-rich and Tl-poor “mysterite” to explain Tl and Bi contents of dark clasts in the Supuhee H6 chondrite and of bulk Supuhee. They suggested that these two components formed by gas-dust fractionation during condensation. An aliquot of one of the clasts studied by Higuchi et al. and found to contain Tl-poor mysterite was analyzed by instrumental n...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Meteoritics & Planetary Science
سال: 2010
ISSN: 1086-9379,1945-5100
DOI: 10.1111/j.1945-5100.2010.01020.x