|This information has been developed from the publications:
425256. Six kilometres north of Glen Wills.
Tors and cliffs in muscovite with granite.
Track from Tallangatta-Omeo Road.
Large granite tors and east- facing cliffs up to 50 metres in height occur on Mount Wills. The granite varies from medium to very coarse grained, the finer grained types predominantly in the north-western part of the outcrop. These contain both biotite and muscovite-rich types are more abundant. Occasional tourmaline- rich pockets occur, which contain up to 30 per cent of this mineral as small prisms up to two centimetres in length.
Gneissic granite types are rare although east of the Mount Wills summit occasional outcrops of rocks showing distinct banding of muscovite and tourmaline occur. Of additional interest are the several large rafts of metamorphics that are incorporated in the granite to the north of the summit and the tin and gold mineralisation associated with sulphide- bearing quartz veins in the contact area to the south of the mountain.
Regional. The muscovite-granite of Mount Wills is distinctive in the region.
Because of the area covered by the site, the value of the significant geological features is unlikely to be seriously reduced by localised land disturbance, eg. road works or extractive industries.
Crohn, P.W. 1950. 'The geology, petrology and physiography of the Omeo District, North-Eastern Victoria', Proc. R. Soc. Vict., 62 :1-70.