Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Pore-Scale Microenvironments Control Anthropogenic Carbon Mineralization Outcomes in Basalt

Journal Article · · ACS Earth and Space Chemistry

Thin sections and hand samples from 50 sidewall cores from the Wallula Basalt Pilot Demonstration, a basaltic carbon sequestration demonstration, provided the opportunity for the in-depth analysis of carbon mineralization induced by the injection of supercritical CO2. In this study, we used optical petrography and scanning electron microscopy to characterize the physical and chemical characteristics of the basalt components influenced by carbon mineralization reactions from all available hand samples and thin sections within the three CO2 injection zones and caprock flow interiors. We found extensive carbonate mineralization, mostly in the form of nodules that were shown to be chemically zoned: Ca-dominant in the core regions and Ca-bearing Fe-dominant in the outer regions. Carbonate mineralization also took the form of fracture-filling carbonate cement, and acicular aragonite was also observed. Overall, we clarified the structural and paragenetic relationships between newly formed minerals, identifying a new fibro-palagonite-like, poorly crystalline silicate phase that grew on the carbonate nodules and pore-lining zeolites. Here we observed Fe-dominant carbonate precipitates surrounding acicular aragonite and rhombohedral Ca-carbonate cores, whereas previous studies of these zoned nodules did not observe these structures. A comprehensive accounting of the carbon mineralization products is vital to understand and predict the behavior of supercritical CO2 in the subsurface given both the diversity of the host rock between and within injection zones, especially considering that the morphology and chemistry of the diverse precipitates are influenced by the pore-scale microenvironments of the basalt.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1906315
Report Number(s):
PNNL-SA-173493
Journal Information:
ACS Earth and Space Chemistry, Journal Name: ACS Earth and Space Chemistry Journal Issue: 12 Vol. 6; ISSN 2472-3452
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (44)

Dissolution and secondary mineral precipitation in basalts due to reactions with carbonic acid: BASALT DISSOLUTION DUE TO CARBONIC ACID journal June 2017
Palagonite – a review journal August 2002
Effect of matrix composition on carbonate nodule crystallization journal March 1974
The influence of some naturally occurring minerals on the precipitation of calcium carbonate polymorphs journal January 2000
Crystal nucleation and growth of spherulites demonstrated by coral skeletons and phase-field simulations journal June 2020
Mineralogical aspects of CO2 sequestration during hydrothermal basalt alteration — An experimental study at 75 to 250°C and elevated pCO2 journal May 2012
Dissolution and surface roughening of Columbia River flood basalt at geologic carbon sequestration conditions journal September 2017
The role of clay surfaces in the heterogeneous nucleation of calcite: Molecular dynamics simulations of cluster formation and attachment journal April 2020
Carbon mineralization and geological storage of CO2 in basalt: Mechanisms and technical challenges journal June 2022
Basalt Reactivity Variability with Reservoir Depth in Supercritical CO2 and Aqueous Phases journal January 2011
The Wallula basalt sequestration pilot project journal January 2011
Injection and Monitoring at the Wallula Basalt Pilot Project journal January 2014
Clay minerals affect calcium (magnesium) carbonate precipitation and aging journal August 2021
CarbFix2: CO2 and H2S mineralization during 3.5 years of continuous injection into basaltic rocks at more than 250 °C journal June 2020
Carbonate mineralization of volcanic province basalts journal March 2010
CO2 mineral trapping in fractured basalt journal November 2017
Reactive transport modeling of mineral carbonation in unaltered and altered basalts during CO2 sequestration journal June 2019
The onset of spherulitic growth in crystallization of calcium carbonate journal July 2010
A screening criterion for selection of suitable CO 2 storage sites journal January 2016
A review of mineral carbonation technology in sequestration of CO2 journal September 2013
Quantification of CO 2 Mineralization at the Wallula Basalt Pilot Project journal September 2020
Alkalinity Generation Constraints on Basalt Carbonation for Carbon Dioxide Removal at the Gigaton-per-Year Scale journal August 2021
Exotic Carbonate Mineralization Recovered from a Deep Basalt Carbon Storage Demonstration journal September 2022
Permanent CO 2 Trapping through Localized and Chemical Gradient-Driven Basalt Carbonation journal June 2018
Field Validation of Supercritical CO 2 Reactivity with Basalts journal November 2016
CO 2 Mineral Sequestration in Naturally Porous Basalt journal February 2018
Pore-Scale Modeling of Nucleation and Growth in Porous Media journal January 2020
Spherulitic Growth of Calcium Carbonate journal May 2010
Spherulites journal November 2011
Impacts of Organic Ligands on Forsterite Reactivity in Supercritical CO 2 Fluids journal March 2015
Evolution of palagonite: Crystallization, chemical changes, and element budget: PALAGONITE journal July 2001
Potential for carbon dioxide sequestration in flood basalts: SEQUESTRATION IN FLOOD BASALTS journal December 2006
A Modified Staining Technique for Carbonates in Thin Section journal February 1965
High reactivity of deep biota under anthropogenic CO2 injection into basalt journal October 2017
Molecular-scale mechanisms of CO2 mineralization in nanoscale interfacial water films journal August 2022
Carbon dioxide storage through mineral carbonation journal January 2020
Microbial characterization of basalt formation waters targeted for geological carbon sequestration journal March 2013
Crystallization by particle attachment in synthetic, biogenic, and geologic environments journal July 2015
Rapid carbon mineralization for permanent disposal of anthropogenic carbon dioxide emissions journal June 2016
Genesis of siderite nodules from the lower carboniferous terrigenous sequence in the Subpolar Urals journal March 2017
Lower Carboniferous Siderites: A Product of Bottom Seeps and Bacterial Metanogenesis (Subpolar Urals) journal February 2018
On some Occurrences of Spherulitic Siderite and other Carbonates in Sediments journal March 1925
Carbonate Identification and Genesis as Revealed by Staining journal January 1966
Potential Sites for Underground Energy and CO2 Storage in Greece: A Geological and Petrological Approach journal May 2020

Similar Records

Exotic Carbonate Mineralization Recovered from a Deep Basalt Carbon Storage Demonstration
Journal Article · Tue Sep 27 00:00:00 EDT 2022 · Environmental Science and Technology · OSTI ID:1895590

3D Quantification of Pore Networks and Anthropogenic Carbon Mineralization in Stacked Basalt Reservoirs
Journal Article · Wed Jan 31 23:00:00 EST 2024 · Environmental Science and Technology · OSTI ID:2335501

Facile Metal Release from Pore-Lining Phases Enables Unique Carbonate Zonation in a Basalt Carbon Mineralization Demonstration
Journal Article · Fri Jul 28 00:00:00 EDT 2023 · Environmental Science and Technology · OSTI ID:2203507