Among accessory minerals, in addition to apatite, zircon, and iron oxides, the following may be mentioned : hornblende ( not common ), riebeckite ( rare ), epidote and zoisite, calcite, sphene, andalusite, sillimanite, kyanite, hercynite ( a green spinel ), rutile, orthite and tourmaline.
42.
On the western edge of the Yilgarn Craton, partially covered by Phanerozoic sedimentary basins and in faulted contact with the 2.7 Ga to 2.55 Ga Yilgarn tectonic domains, lies the Jumperding Gneiss Complex of 2.75 to 2.65 Ga age, composed primarily of micaceous quartzite, quartz-feldspar-biotite-garnet gneiss, andalusite and sillimanite schists, banded iron formation and other exotics, intruded by minor masses of porphyritic granite.
