Corundum‐ilmenite and corundum‐spinel associations in granulite facies rocks from central Australia

Corundum laths have been identified as exsolution products from both ilmenite and spinel in granulite facies rocks from central Australia. The exsolution is interpreted as having occurred during a decrease in the P‐T conditions under which the minerals initially crystallized. The ilmenite + corundum possibly indicate the existence of a former homogeneous iron‐högboemite. The spinel + corundum suggests that under conditions of high Ps‐T (granulite facies) and low fo2 there exists a field where aluminous spinel is stable.