Chondrule-like objects and a Ca-Al-rich inclusion from comets or comet-like icy bodies

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Takaaki Noguchi, Daisuke Nakashima, Takayuki Ushikubo, Wataru Fujiya, Noriaki Ohashi, John P. Bradley, Tomoki Nakamura, Noriko T. Kita, Peter Hoppe, Hidemi Ishibashi, Makoto Kimura, Naoya Imae Geochimica et Cosmochimica ActaAvailable online 6 August 2024 LINK…

Petrographic and chemical characterization and carbon and nitrogen isotopic compositions of cometary IDPs and their GEMS amorphous silicatesOPEN ACCESS 

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Birgit Schulz, Christian Vollmer, Jan Leitner, Lindsay P. Keller , Quentin M. Ramasse Geochimica et Cosmochimica ActaAvailable online 19 June 2024 LINK (OPEN ACCESS) “GEMS (glass with embedded metal and sulfides) are the dominant carrier…

On the provenance of GEMS, a quarter century post discovery

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John P. Bradley, Hope A. Ishii, Karen Bustillo, James Ciston, Ryan Ogliore, Thomas Stephan, Donald E. Brownlee, David J. Joswiak Geochimica et Cosmochimica ActaAvailable online 5 July 2022In Press, Journal Pre-proof LINK “The provenance of…

Condensation of cometary silicate dust using an induction thermal plasma system I. Enstatite and CI chondritic compositionOPEN ACCESS 

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T. H. Kim, A. Takigawa, A. Tsuchiyama, J. Matsuno, S. Enju, H. Kawano, H. Komaki PDF (OPEN ACCESS) “Glass with embedded metal and sulfides (GEMS) is a major component of chondritic porous interplanetary dust particles….

GEMS, hydrated chondritic IDPs, CI‐matrix material: Sources of water in 81P/comet Wild 2

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Frans J. M. Rietmeijer Meteoritics & Planetary Science First published: 14 October 2018 LINK “So far there is no conclusive evidence for water in the nucleus of 81P/comet Wild 2. Recently magnetite in collected Wild…

Multiple generations of grain aggregation in different environments preceded solar system body formationOPEN ACCESS 

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Hope A. Ishii, John P. Bradley, Hans A. Bechtel, Donald E. Brownlee, Karen C. Bustillo, James Ciston, Jeffrey N. Cuzzi, Christine Floss, and David J. Joswiak PNAS June 11, 2018. 201720167; published ahead of print…

GEMS-like material in the matrix of the Paris meteorite and the early stages of alteration of CM chondrites

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H. Leroux, P. Cuvillier, B. Zanda, R.H. Hewins Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 28 September 2015 doi:10.1016/j.gca.2015.09.019 LINK “The Paris meteorite is a weakly altered CM chondrite that has been…

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