{"id":{"repo_id":"anu","oai_identifier":"oai:openresearch-repository.anu.edu.au:1885/733808735"},"canonical_url":"https://search.dev.ndltd.org/etd/anu/oai:openresearch-repository.anu.edu.au:1885/733808735","repository":{"repo_id":"anu","name":"Australian National University","base_url":"https://openresearch-repository.anu.edu.au/server/oai/request"},"display":{"title":"Analysis of pathways for volatile-bearing mineral formation in carbonaceous chondrites using thermodynamic simulations","abstract":"Low temperature minerals in carbonaceous chondrites record volatile processes in the solar system. These processes could occur via liquid-solid or gas-solid reactions; however, few studies have considered gases. A Gibbs free energy minimization approach was used to investigate the formation of the Tagish Lake meteorite's low temperature matrix including gases and liquid water, with starting compositions of low O and high O determined from its bulk composition. The high O model predicts phyllosilicate formation at <500 Degrees C, accounting for up to 24 mol% of solids and showing a similar compositional trend to observations of Tagish Lake's carbonate-rich lithology. Carbonates reached a maximum abundance of 50 mol% of solids at the lowest simulated temperature (0 Degrees C), being the most abundant group of minerals, excluding water. The low O model also formed phyllosilicates at <500 Degrees C, reaching up to ~18 mol% of solids, however carbonates were negligible. The low O phyllosilicate compositions more closely mirror the Tagish Lake's carbonate-poor lithology. The low O composition also predicts the coexistence olivine and abundant phyllosilicate for temperatures <150 Degrees C. These models indicate the importance of O in carbonaceous chondrite alteration and confirm that high and low temperature minerals could coexist in carbonaceous chondrites in a system open to gas within the parent body. Also, this model provides a method of quantifying volatile loss due to heating on an asteroid.","abstract_html":"Low temperature minerals in carbonaceous chondrites record volatile processes in the solar system. These processes could occur via liquid-solid or gas-solid reactions; however, few studies have considered gases. A Gibbs free energy minimization approach was used to investigate the formation of the Tagish Lake meteorite's low temperature matrix including gases and liquid water, with starting compositions of low O and high O determined from its bulk composition. The high O model predicts phyllosilicate formation at <500 Degrees C, accounting for up to 24 mol% of solids and showing a similar compositional trend to observations of Tagish Lake's carbonate-rich lithology. Carbonates reached a maximum abundance of 50 mol% of solids at the lowest simulated temperature (0 Degrees C), being the most abundant group of minerals, excluding water. The low O model also formed phyllosilicates at <500 Degrees C, reaching up to ~18 mol% of solids, however carbonates were negligible. The low O phyllosilicate compositions more closely mirror the Tagish Lake's carbonate-poor lithology. The low O composition also predicts the coexistence olivine and abundant phyllosilicate for temperatures <150 Degrees C. These models indicate the importance of O in carbonaceous chondrite alteration and confirm that high and low temperature minerals could coexist in carbonaceous chondrites in a system open to gas within the parent body. Also, this model provides a method of quantifying volatile loss due to heating on an asteroid.","abstract_has_math":false,"creators":["Baile, Riley"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2026,"date_issued":"2026","date_published":"2026","updated_at":"2026-07-24T00:54:30Z","subjects":[],"languages":["en_AU"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/1885/733808735","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Baile, Riley"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2026-04-29T12:53:05Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-04-29T12:53:05Z"]},{"key":"dc:date.issued","label":"Date","values":["2026"]},{"key":"dc:type","label":"Dc Type","values":["Thesis (MPhil)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_AU"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/1885/733808735"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Low temperature minerals in carbonaceous chondrites record volatile processes in the solar system. These processes could occur via liquid-solid or gas-solid reactions; however, few studies have considered gases. A Gibbs free energy minimization approach was used to investigate the formation of the Tagish Lake meteorite's low temperature matrix including gases and liquid water, with starting compositions of low O and high O determined from its bulk composition. The high O model predicts phyllosilicate formation at <500 Degrees C, accounting for up to 24 mol% of solids and showing a similar compositional trend to observations of Tagish Lake's carbonate-rich lithology. Carbonates reached a maximum abundance of 50 mol% of solids at the lowest simulated temperature (0 Degrees C), being the most abundant group of minerals, excluding water. The low O model also formed phyllosilicates at <500 Degrees C, reaching up to ~18 mol% of solids, however carbonates were negligible. The low O phyllosilicate compositions more closely mirror the Tagish Lake's carbonate-poor lithology. The low O composition also predicts the coexistence olivine and abundant phyllosilicate for temperatures <150 Degrees C. These models indicate the importance of O in carbonaceous chondrite alteration and confirm that high and low temperature minerals could coexist in carbonaceous chondrites in a system open to gas within the parent body. Also, this model provides a method of quantifying volatile loss due to heating on an asteroid."]},{"key":"dc:title","label":"Title","values":["Analysis of pathways for volatile-bearing mineral formation in carbonaceous chondrites using thermodynamic simulations"]}]}],"canonical_facts":{"dc:creator":["Baile, Riley"],"dc:date.accessioned":["2026-04-29T12:53:05Z"],"dc:date.available":["2026-04-29T12:53:05Z"],"dc:date.issued":["2026"],"dc:description.abstract":["Low temperature minerals in carbonaceous chondrites record volatile processes in the solar system. These processes could occur via liquid-solid or gas-solid reactions; however, few studies have considered gases. A Gibbs free energy minimization approach was used to investigate the formation of the Tagish Lake meteorite's low temperature matrix including gases and liquid water, with starting compositions of low O and high O determined from its bulk composition. The high O model predicts phyllosilicate formation at <500 Degrees C, accounting for up to 24 mol% of solids and showing a similar compositional trend to observations of Tagish Lake's carbonate-rich lithology. Carbonates reached a maximum abundance of 50 mol% of solids at the lowest simulated temperature (0 Degrees C), being the most abundant group of minerals, excluding water. The low O model also formed phyllosilicates at <500 Degrees C, reaching up to ~18 mol% of solids, however carbonates were negligible. The low O phyllosilicate compositions more closely mirror the Tagish Lake's carbonate-poor lithology. The low O composition also predicts the coexistence olivine and abundant phyllosilicate for temperatures <150 Degrees C. These models indicate the importance of O in carbonaceous chondrite alteration and confirm that high and low temperature minerals could coexist in carbonaceous chondrites in a system open to gas within the parent body. Also, this model provides a method of quantifying volatile loss due to heating on an asteroid."],"dc:identifier.uri":["https://hdl.handle.net/1885/733808735"],"dc:language.iso":["en_AU"],"dc:title":["Analysis of pathways for volatile-bearing mineral formation in carbonaceous chondrites using thermodynamic simulations"],"dc:type":["Thesis (MPhil)"]},"updated_at":"2026-07-24T00:54:30Z"}