Numerical simulations of polycrystal growth in veins

Microstructures in crack-seal veins are influenced by additional parameters, such as the width of individual crack-seal increments and the fracture morphology. We present a detailed study of the transition between free-fluid growth and crack-seal growth as a function of the relative rates of crack opening and crystal growth, to illustrate how this induces the microstructural transition between fibrous and blocky veins.