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A calcium–aluminium-rich inclusion or Ca–Al-rich inclusion (CAI) is a submillimeter- to centimeter-sized light-colored calcium- and aluminium-rich inclusion found in carbonaceous chondrite meteorites. The four CAIs that have been dated using the Pb-Pb chronometer yield a weighted mean age of 4567.30 ± 0.16 Myr.
A meteorite mineral is a mineral found chiefly or exclusively within meteorites or meteorite-derived material. [citation needed] This is a list of those minerals, excluding minerals also commonly found in terrestrial rocks.
IIICD meteorites consists dominantly of meteoric iron with silicate inclusions. The silicate inclusions are almost identical to the IAB meteorite inclusions. They contain low-Ca pyroxene, high-Ca pyroxene, olivine, plagioclase, troilite, graphite, different phosphates, meteoric iron and traces of daubréelite and chromite.
Chondrules can range in diameter from just a few micrometers to over 1 centimetre (0.39 in). Again, different kinds of chondrites contain different ranges of chondrule sizes: they are smallest in CH, CM, and CO chondrites (see meteorite classification ), moderately large in CR, CV, L, LL, and R chondrites, and largest in some CB chondrites (see ...
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K, Na, Al, Cr Davemaoite is a high-pressure calcium silicate perovskite (CaSiO 3 ) mineral with a distinctive cubic crystal structure. It is named after geophysicist Ho-kwang (Dave) Mao , who pioneered in many discoveries in high-pressure geochemistry and geophysics.
It forms complex solid solutions with other Al, Fe, and Ca-bearing garnets in this region. All of the minerals of the Earth's mantle are made of oxygen as the principal anion . It has been reported that a significant property of majorite is that under conditions of high pressure and temperature as exist in the mantle the mineral tends to absorb ...
A new House bill would ban health insurers from imposing arbitrary time limits on patients under anesthesia — days after Anthem Blue Cross Blue Shield only backed off the move amid outcry. “We ...