Ref.: Carr, Phillips & Williams - Min.Mag. 1976 40,853-6.
Phonolite dykes forming cliffs, intruding the north-western part of the Billycan Creek anticline in the Triassic Bryden Beds and Nara Volcanics.
Grid Ref: 650476 and 652460 on the Caboolture 1-mile military map.
The first confirmed occurrence of Eudialyte in Australia.