炭素蓄積に向けた鉱物の成分特定を支援する新しいデータセット (Identifying the Elements for Carbon Storage)

2025-01-07 パシフィック・ノースウェスト国立研究所

＜関連情報＞

• https://www.pnnl.gov/news-media/identifying-elements-carbon-storage
• https://pubs.acs.org/doi/10.1021/acsearthspacechem.4c00044

Mg-NiおよびMg-Feカンラン石の構造-組成関係 Structure–Composition Relationships for Mg–Ni and Mg–Fe Olivine

Arianna M. Morfin,C. Heath Stanfield,Madeline A. Murchland,Madeline F. Bartels,Alexandra B. Nagurney,Quin R.S. Miller,and H. Todd Schaef
ACS Earth and Space Chemistry  Published: August 20, 2024
DOI:https://doi.org/10.1021/acsearthspacechem.4c00044

Abstract

Olivine is a dynamic and important mineral in the crust and mantle with relevance to processes that are important to climate change technology, such as geologic carbon storage and critical mineral recovery. In this work, we critically evaluated and compiled a new database of olivine diffraction data, lattice parameters, and compositions to enable rapid Ni–Mg–Fe olivine composition determination. A compilation of olivine X-ray diffraction data and chemical compositions from both the literature and the International Centre for Diffraction Data (ICDD) powder database was assembled to plot both the forsterite–fayalite and forsterite–liebenbergite solid-solution lines. We present an expanded data set to delineate equations and relationships used for quantifying the correlations between olivine lattice parameters and chemical compositions in Mg₂SiO₄–Fe₂SiO₄ (forsterite–fayalite) and Mg₂SiO₄–Ni₂SiO₄ (forsterite–liebenbergite) olivine solid-solution series.