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Words near each other
・ Glass Tiger
・ Glass Tiger (film)
・ Glass tile
・ Glass Tower
・ Glass Tower (video game)
・ Glass Towers
・ Glass Town
・ Glass transition
・ Glass Trap
・ Glass tube
・ Glass v. Louisiana
・ Glass v. The Sloop Betsey
・ Glass Wars
・ Glass Wave
・ Glass Wings
Glass with embedded metal and sulfides
・ Glass wool
・ Glass working
・ Glass's Guide
・ Glass's shrew
・ Glass, Huntly
・ Glass, Molders, Pottery, Plastics and Allied Workers International Union
・ Glass-bottom boat
・ Glass-bottom boat (disambiguation)
・ Glass-ceramic
・ Glass-ceramic-to-metal seals
・ Glass-coated wire
・ Glass-filled polymer
・ Glass-Jet
・ Glass-to-metal seal


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Glass with embedded metal and sulfides : ウィキペディア英語版
Glass with embedded metal and sulfides
Glass with embedded metal and sulfides (GEMS) are tiny spheroids in cosmic dust particles with bulk compositions that are approximately chondritic. They form the building blocks of anhydrous interplanetary dust particles (IDPs) in general, and ''cometary'' IDPs, in particular. Their compositions, mineralogy and petrography appear to have been shaped by exposure to ionizing radiation. Since the exposure occurred prior to the accretion of cometary IDPs, and therefore comets themselves, GEMS are likely either solar nebula or presolar interstellar grains. The properties of GEMS (size, shape, mineralogy) bear a strong resemblance to those of interstellar silicate grains as inferred from astronomical observations.〔Bradley and Ireland, 1996〕
==References==

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