Abstract

Fractures and pores in basalt ought to furnish good sized pore extent and floor vicinity of reactive minerals for carbonate mineral formation in geologic carbon sequestration. In many fractures solute transport will be confined to diffusion, and opposing chemical gradients that structure as a end result of awareness variations can lead to spatial distribution of silicate mineral dissolution and carbonate mineral precipitation. Glass tubes packed with grains of olivine or basalt with specific grain sizes and compositions have been used to discover the identification and spatial distribution of carbonate minerals that structure in dead-end one-dimensional diffusion-limited zones that are related to a large reservoir of water in equilibrium with one hundred bar CO2 at a hundred °C. Magnesite fashioned in experiments with olivine, and Mg- and Ca-bearing siderite shaped in experiments with flood basalt.

Keywords: Carbon dioxide sequestration; Case studies; Mineralization