Published online by Cambridge University Press: 01 May 2009
Evidence is presented that some fibrous veins may be formed by recrystallization of the original rock in place. It is suggested that water in a joint promotes pressure solution of the adjacent wall rock. Redeposition under conditions of tensile strain crystallization causes growth of crystal fibres into the joint and into the wall. The effects of this process are revealed by reference to fibrous veins that are present in the laminated, dolomitic, quartz sediments at Mount Isa Mine.