{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Zega TJ"],"funding":["Swiss National Science Foundation"],"pagination":["832-839"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12422949"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["18(9)"],"pubmed_abstract":["Samples of asteroid (101955) Bennu delivered by the OSIRIS-REx mission offer the opportunity to study pristine planetary materials unchanged by exposure to the terrestrial environment. Here we use a combination of X-ray diffraction and various electron microscopy techniques to explore the detailed mineralogy of Bennu samples and determine the alteration history of the planetesimal protolith from which they originated. The samples consist largely of hydrated sheet-silicate minerals, namely nanoscale serpentine and saponite of varied grain size, which are decorated with micro- to nanoscale Fe-sulfides, magnetite and carbonates. We observe sheet silicates parallel and normal to sulfide surfaces and as inclusions in sulfides; sulfur-rich veins transecting the sheet-silicate matrix; zoned carbo"],"journal":["Nature geoscience"],"pubmed_title":["Mineralogical evidence for hydrothermal alteration of Bennu samples."],"pmcid":["PMC12422949"],"funding_grant_id":["219860"],"pubmed_authors":["Domanik K","Barnes JJ","Kerrison NA","Prince BS","Benner MC","Ray S","Zanetta PM","Keller LP","Nguyen AN","Hill D","Marcus MA","Bechtel HA","Salge T","Tachibana S","Vega Santiago N","Le L","Zeszut Z","Russell SS","Haenecour P","Seifert LB","Sakamoto N","Bajo K","Timms N","Reddy SM","Eckley SA","Vincze L","Bland P","Jourdan F","Tu V","Zega TJ","Guigoz V","Kawasaki N","Jones RH","Lauretta DS","Corrigan CM","Connolly HC","Gooding T","Franchi IA","Manga VR","Grady M","Greenwood RC","Harrison C","McCoy TJ","Saxey D","Libourel G","Bates HC","Rickard W","Sandford SA","Lunning N","Rose TR","Singerling SA","Chang YJ","Brenker FE","Righter K","Dworkin JP","Wardell LR","Smith L","King A","Yurimoto H","Almeida NV","Portail M","Hamilton VE","Thompson M","Dominguez G","Schofield PF","Najorka J","Thomas-Keprta K","Kontogiannis M","Busemann H","Tait K","Ong I","Gainsforth Z","Chaves L"],"additional_accession":[]},"is_claimable":false,"name":"Mineralogical evidence for hydrothermal alteration of Bennu samples.","description":"Samples of asteroid (101955) Bennu delivered by the OSIRIS-REx mission offer the opportunity to study pristine planetary materials unchanged by exposure to the terrestrial environment. Here we use a combination of X-ray diffraction and various electron microscopy techniques to explore the detailed mineralogy of Bennu samples and determine the alteration history of the planetesimal protolith from which they originated. The samples consist largely of hydrated sheet-silicate minerals, namely nanoscale serpentine and saponite of varied grain size, which are decorated with micro- to nanoscale Fe-sulfides, magnetite and carbonates. We observe sheet silicates parallel and normal to sulfide surfaces and as inclusions in sulfides; sulfur-rich veins transecting the sheet-silicate matrix; zoned carbo","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025","modification":"2026-04-23T03:17:39.554Z","creation":"2026-04-23T03:10:17.256Z"},"accession":"S-EPMC12422949","cross_references":{"pubmed":["40949425"],"doi":["10.1038/s41561-025-01741-0"]}}