As such it occurs in such rocks as granite, syenite, schist, gneiss, amphibolite, marble and eclogite. Although there are few reported occurrences in Wisconsin, it is likely locally abundant. T.29N. R.6E. west of Wausau. Here it is associated with quartz, K feldspar, lithium-rich mica, riebeckite, aegirine, fluorite, pyrochlore and zircon. Micro-xls. and masses of rutile occur in quartz at the Tork and Haessley quarries near Wisconsin Rapids.
Associated minerals are anatase, titanite and brookite.