| Presently ilmenite is being won from titaniferous iron ore deposits in New York, Canada, Finland, and Norway. |
| Microscopic analyses reveal that the oxide mineralogy of the dolerites is dominated by magnetite and ilmenite. |
| The biotite melts incongruently at the highest grades with the production of orthopyroxene and ilmenite. |
| The pegmatite is composed of microcline, plagioclase and quartz with minor amounts of clinopyroxene, orthopyroxene, ilmenite and zircon. |
| It grades into a manganese-rich ilmenite that ultimately replaces the spinel phase near the transition to the garnet amphibolite. |
| This is followed by ophitic or poikilitic crystallization of pyroxene and ilmenite about scarce nuclei, produced at lower temperatures. |
