Aaron Celestian, Ph.D.
Curator of Mineral Sciences
Natural History Museum of Los Angeles County
Mineral scientist bridging fundamental research with real-world applications in astrobiology, energy materials, and environmental science. Recognized expert in ion exchange mechanisms and biosignature detection. Research spans from searching for life on Mars to developing sustainable lithium extraction methods, with a focus on how minerals interact with their environments and living systems to address global challenges.
With Oak Ridge National Laboratory and Element3 Mineral Selective Technologies
Dissertation: Time-resolved structural characterization of microporous silicotitanates and niobium silicotitanates
Thesis: Ion exchange of K₈Al₈Ge₈O₃₂·8H₂O and Na₂₄Al₂₄Ge₂₄O₉₆·40H₂O gismondine
Natural History Museum of Los Angeles County
Department of Earth Sciences, University of Southern California
West Los Angeles College
NASA Jet Propulsion Laboratory
Natural History Museum of Los Angeles County
Department of Geography and Geology, Western Kentucky University
Western Kentucky University
Department of Geography and Geology, Western Kentucky University
School of Earth and Environmental Science, City University of New York Queens College
NSF Major Research Instrumentation (2026)
Acquisition of a New Single Crystal X-ray Diffraction Instrument for Structure Solution of Ordered and Disordered Earth Materials · PI with Co-I A. R. Kampf
NOAA Sea Grant (2023–2026)
Plastics Past and Present: Understanding historical trends of microplastic consumption in California marine food webs · Co-PI with W. Ludt
Department of Energy Critical Materials (2021–2023)
Informed design of crystalline ion exchangers: Improved λ-MnO₂ phase for lithium extraction from geologic fluids · Co-PI with C. Camiré, W. Bourcier
American Elements (2021–2022)
Selective Rare Earth Element Ion Exchange in Minerals
Getty Museum (2020–2022)
PST 2024 — Realities of the Environmental Disparities that People of Color Face · Co-PI with M. Garcia, B. H. Jaramillo, M. Muro, L. Higgins
NASA RT&D (2020/2021–2023)
Simulating Ocean World Microbiology and Pressure-Relevant Ecological Systems · Co-PI with S. Perl
Oak Ridge National Laboratory (2021)
Neutron Scattering Studies of Microporous Zirconium Silicates
NASA NSPIRES (2018–2021)
Investigating a novel role for iron redox cycling in the lithification of microbial mats · Co-PI with F. Corsetti, V. Petryshyn, S. S. Bradley, J. R. Spear, W. Berelson
NSF EPSCoR (2013–2014)
Advancing porous nanominerals for basic energy science, environmental security, and materials genomics
American Chemical Society — Petroleum Research Fund (2011–2013)
Mechanisms of ion selectivity in porous frameworks
77 peer-reviewed articles · 5 preprints · 5 other · View on Google Scholar
Peer-reviewed articles 2026 — 14 articlesBird feathers from a Late Cretaceous coprolite
Current Biology, 2026. https://doi.org/10.1016/j.cub.2026.08.054
Raman characterization of carotenoid pigment stability in evaporites under simulated Martian ultraviolet irradiance
Journal of Geophysical Research: Planets, 131, e2026JE009730. https://doi.org/10.1029/2026JE009730
Reply to González González et al.: The contribution of bacteria to kidney stone formation
Proceedings of the National Academy of Sciences U.S.A., 123(24), e2609802123. https://doi.org/10.1073/pnas.2609802123
Groundwater Connectivity and Buffering in Western Australian Hypersaline Lakes: Implications for Late-Stage Martian Lacustrine Systems
Earth and Space Science, 13(7), e2026EA005066. https://doi.org/10.1029/2026EA005066
Biological Validation and Agnostic Experiments for Extant and Extinct Microbial Life within the Martian Subsurface
Astrobiology, 26(1_suppl), 156S–171S
Biofilm-mineral intergrowth defines the hierarchical microarchitecture of calcium oxalate kidney stones
Perchlorate supported anaerobic growth in Haloferax volcanii reveals a novel metabolic capability with implications for biosignature degradation
Scientific Reports
Mapping Quartz and Feldspar Areal Abundance and Grain Sizes Using Integrated VTIR Data
AGU Advances, 7(3), e2025AV002151. https://doi.org/10.1029/2025AV002151
Mechanism of Lithium Ion Exchange Into Spinel Manganese Oxide
Journal of Raman Spectroscopy, 57(1), 131–139
Intercalated bacterial biofilms are intrinsic internal components of calcium-based kidney stones
Proceedings of the National Academy of Sciences, 123(5), e2517066123
Mineral Weathering Experiments for Terrestrial Planetary Analogs in a Continuous-Flow Reactor
Geofluids, 2026(1), 6180315
Molecular Mechanisms of Magnesium Sulfate Crystallization: Bond Length Inversion and the Role of Hydration in Mineral Formation
American Mineralogist
Nitrogen mineral hosts in subduction zone metamorphosed ultramafic rocks: Implications for deep Forearc (to Subarc) transfer
Chemical Geology, 707, 123307. https://doi.org/10.1016/j.chemgeo.2026.123307
Cadvanite, a New Cadmium Vanadate from the Burro Mine, San Miguel County, Colorado, USA
The Canadian Journal of Mineralogy and Petrology, 64(2), 185–193
Evaporitic Preservation of Modern Carotenoid Biomarkers and Halophilic Microorganisms in Mars Analog Hypersaline Environments
Astrobiology, 25(11), 765–776
Evidence for Low Dissolved Silica in mid-Mesozoic Oceans
American Journal of Science, 325, 1
Svornostite-(NH4): a new mineral from the Blue Lizard mine, San Juan County, Utah, USA, and the establishment of the svornostite mineral group
Mineralogical Magazine, 89(5), 609–617
Signature Specimen: Elbaite from the Cruzeiro Pegmatite, Minas Gerais, Brazil
Rocks & Minerals, 99(1), 86–88
Radiocarbon Chronology/Growth Rates of Ooids from Great Salt Lake, Utah
Utah Geological Association Publication
In situ potassium and hydrogen ion exchange into a cubic zirconium silicate microporous material
PLOS ONE, 19(3), e0298661
Fe/Mg-silicate chemical gardens as analogs to silicate-rich hydrothermal chimneys on early Earth and Mars
ACS Earth and Space Chemistry, 8(10), 1982–1996
Living to Lithified: Construction and Preservation of Silicified Biomarkers
Geobiology, 22(5), e12620
Rare Earth: Crystalline Treasures — Exhibition at the Santa Barbara Museum of Natural History
Rocks & Minerals, 98(2), 148–159
New Mineral Names: Arsenic and Lead
American Mineralogist, 108(3), 634–636
New Mineral Names: Heavy Metal and Minerals from China
American Mineralogist, 108(10), 1993–1994
Assessing the origin of pisoids within a travertine system in the border of Puna Plateau, Argentina
Sedimentology, 69(3), 1252–1275
Relianceite-(K), a new phosphate–oxalate mineral from the Rowley mine, Arizona, USA
Mineralogical Magazine, 86(4), 539–547
Dendoraite-(NH4), a new phosphate–oxalate mineral from the Rowley mine, Arizona, USA
Mineralogical Magazine, 86(4), 531–538
New Mineral Names: Alteration Products
American Mineralogist, 107(2), 318–320
Rapid phase identification of apatite and zircon grains for geochronology using X-ray micro-computed tomography
Geochronology, 4(2), 501–515
New Mineral Names: High-Pressure and Precious Minerals
American Mineralogist, 107(4), 778–780
Flaggite, a new mineral with stair-step-like HCP layers from Tombstone, Arizona, USA
Mineralogical Magazine, 86(3), 397–404
Evidence for benthic oxygen production in Neoarchean lacustrine stromatolites
Geology, 50(8), 907–911
New Mineral Names: Hydrous Minerals
American Mineralogist, 107(8), 1656–1658
Jasonsmithite, a new phosphate mineral with a complex microporous framework, from the Foote mine, North Carolina, USA
American Mineralogist, 106(2), 174–179
Thebaite-(NH4), a new phosphate–oxalate mineral from the Rowley mine, Arizona, USA
Mineralogical Magazine, 85(3), 379–386
Plastic ingestion by freshwater turtles: a review and call to action
Scientific Reports, 11(1), 5672
Allantoin and natrosulfatourea, two new bat-guano minerals from the Rowley mine, Arizona, USA
The Canadian Mineralogist, 59(3), 603–616
A proposed geobiology-driven nomenclature for astrobiological in situ observations and sample analyses
Astrobiology, 21(8), 954–967
New Mineral Names: Diamonds, Dumps, and Fumaroles
American Mineralogist, 106(12), 2028–2030
Colored Stones and Organic Materials
Gems & Gemology, 56(4)
Neoarchean (2.7 Ga) lacustrine stromatolite deposits in the Hartbeesfontein Basin, South Africa
Precambrian Research, 320, 291–302
In situ Cs and H exchange into gaidonnayite and proposed mechanisms of ion diffusion
Inorganic Chemistry, 58(3), 1919–1928
Aragonite dissolution kinetics and calcite/aragonite ratios in sinking and suspended particles in the North Pacific
Earth and Planetary Science Letters, 515, 1–12
Camanchacaite, chinchorroite, espadaite, and three additional new minerals from the Torrecillas mine, Chile
Mineralogical Magazine, 83(5), 655–671
Phoxite, the first phosphate-oxalate mineral
American Mineralogist, 104(7), 973–979
Uppermost Triassic phosphorites from Williston Lake, Canada: link to fluctuating euxinic-anoxic conditions before the end-Triassic mass extinction
Scientific Reports, 9(1), 18790
Pressure-induced hydration and formation of bilayer ice in nacrite, a kaolin-group clay
ACS Earth and Space Chemistry, 4(2), 183–188
Mineral preservation and photoprotective attributes of halophilic bacteria and archaea in modern and Permian lakebed environments
Studia Universitatis Babeș-Bolyai, Biologia, 64(1)
Preliminary results from Laguna Minucúa: a potentially annually resolved record of climate and environmental change, Oaxaca, Mexico
Quaternary International, 469, 85–95
Barwoodite, a New Member of the Welinite Group from Granite Mountain, Arkansas
The Canadian Mineralogist, 56(5), 799–809
Agate Analysis by Raman, XRF, and Hyperspectral Imaging Spectroscopy for Provenance
Gems & Gemology, 54(3)
Rowleyite, a new mineral with a microporous framework structure
American Mineralogist, 102(5), 1037–1044
Structure determination and time-resolved Raman spectroscopy of yttrium ion exchange into microporous titanosilicate ETS-4
Inorganic Chemistry, 55(21), 11057–11063
Measurements of light-absorbing particles on the glaciers in the Cordillera Blanca, Peru
The Cryosphere, 9(1), 331–340
Self-assembled hybrid solids of luminescent Ru(II) polypyridyl complexes and polyoxometalates
Inorganic Chemistry Communications, 43, 23–26
Linking remote and in-situ detection of black carbon on tropical glaciers
Photogramm Eng Remote Sens, 80(5), 385–390
In situ Raman spectroscopic study of transient polyhedral distortions during cesium ion exchange into sitinakite
American Mineralogist, 98(7), 1153–1161
Effects of hydration during strontium exchange into nanoporous hydrogen niobium titanium silicate
Inorganic Chemistry, 51(11), 6251–6258
Synthesis and characterization of two- and three-dimensional calcium coordination polymers
Crystal Growth & Design, 12(8), 3937–3943
In situ X-ray diffraction study of cesium exchange in synthetic umbite
Inorganic Chemistry, 50(8), 3596–3604
The mechanism responsible for extraordinary Cs ion selectivity in crystalline silicotitanate
Journal of the American Chemical Society, 130(35), 11689–11694
Similarities in 2- and 6-line ferrihydrite based on pair distribution function analysis of X-ray total scattering
Chemistry of Materials, 19(6), 1489–1496
Role of the Hydroxyl-Water Hydrogen-Bond Network in Structural Transitions and Selectivity toward Cesium in Crystalline Silicotitanate
Inorganic Chemistry, 46(4), 1081–1089
The origin of ion exchange selectivity in a porous framework titanium silicate
Journal of Materials Chemistry, 17(46), 4839–4842
Dehydration-induced water disordering in a synthetic potassium gallosilicate natrolite
Journal of the American Chemical Society, 129(44), 13744–13748
Solid-state structural characterization of a rigid framework of lacunary heteropolyniobates
Inorganic Chemistry, 45(3), 1043–1052
In situ type study of hydrothermally prepared titanates and silicotitanates
Journal of Materials Science, 41(5), 1325–1333
High-pressure neutron diffraction study of superhydrated natrolite
The Journal of Physical Chemistry B, 109(39), 18223–18225
Optimizing synthesis of Na₂Ti₂SiO₇·2H₂O and ion exchange pathways for Cs-CST determined from in situ synchrotron X-ray powder diffraction
Nuclear Instruments and Methods in Physics Research B, 238(1–4), 61–69
Tribasic lead maleate and lead maleate: Synthesis and structural and spectroscopic characterizations
Inorganic Chemistry, 44(21), 7394–7402
Time-Resolved Diffraction Studies of Ion Exchange: K+ and Na+ Exchange into (Al, Ge) Gismondine
Chemistry of Materials, 16(11), 2244–2254
Crystallization of sodium titanium silicate with sitinakite topology: Evolution from the sodium nonatitanate phase
Chemistry of Materials, 16(19), 3659–3666
Phosphor imaging as a tool for in situ mapping of ppm levels of uranium and thorium in rocks and minerals
Chemical Geology, 193(1–2), 127–136
(K4Li4)Al8Ge8O32·8H2O: an Li+-exchanged potassium aluminogermanate with the zeolite gismondine (GIS) topology
Crystal Structure Communications, 59(8), i74–i76
A new polymorph of eucryptite (LiAlSiO4), ε-eucryptite, and thermal expansion of α- and ε-eucryptite at high pressure
American Mineralogist, 87(4), 566–571
Instability of Beta-Eucryptite under Pressure and Thermal Expansion of ε-LiAlSiO4 at 1.9 GPa
American Mineralogist, 877 (BNL-74038-2005-JA)
Cultivation of halophilic archaea in shallow subsurface martian conditions has implications for extant life on Mars
bioRxiv. https://doi.org/10.64898/2026.07.11.737928
RamanLab: A Comprehensive Cross-Platform Software Suite for Advanced Raman Spectroscopy Analysis
Authorea. https://doi.org/10.22541/au.175269971.11603902/v1
Unlocking the Collections: getting comfortable with next-level access to museum minerals
Authorea. https://doi.org/10.22541/au.156177169.94385131
Locking away toxic metals into tiny holes
Authorea. https://doi.org/10.22541/au.155691298.80411700
Measurements of light absorbing particulates on the glaciers in the Cordillera Blanca, Peru
Cryosphere Discussions, 8(5)
Whole rock and mineral separate nitrogen concentration and isotopic data for meta-ultramafic rocks
Interdisciplinary Earth Data Alliance (IEDA) dataset, 237
Crystal growth and ion exchange in titanium silicates
Springer Handbook of Crystal Growth, 1637–1662
Time-resolved structural characterization of microporous silicotitanates and niobium silicotitanates
Dissertation Abstracts International, 69(10)
Technical Report: Growth of Environmental Science at the NSLS
Synchrotron Radiation News, 20(3), 6–13
Ion Exchange of Gismondine
M.S. Thesis, Stony Brook University
Natural History Museum of Los Angeles County
Department of Mineral Sciences
900 Exposition Blvd., Los Angeles, CA 90007
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