Magnetic properties of the ilmenite-hematite system change dramatically with increasing ilmenite content. We present new data on synthetic and natural samples with compositions ranging from nearly pure hematite to ilmenite 98%. We also characterize the rock magnetic properties in the ilmenite-rich side of the solid solution at temperatures, from 400 K to 5K. A combination of Mossbauer, x́ray, and magnetic data from synthetic and natural samples is used to Identifying which rock magnetic measurements are best for estimating various phase transitions and crossovers; and a loẃtemperature constrained equilibrium phase diagram is drawn.
AGU Fall Meeting Abstracts
- Pub Date:
- December 2007
- 1519 Magnetic mineralogy and petrology;
- 1540 Rock and mineral magnetism