Slate from New Zealand
New Zealand | |
| Speight, R. (1928) The Geology of the Malvern Hills. Memoir No. 1, Geological Memoirs, Department of Scientific and Industrial Research, 72 pages and map. |
| Oldershaw, W. (1970) New gold locality on the Otago Peninsula. New Zealand Journal of Geology and Geophysics, 13:4, 1052-1053. |
| Skwarko, S.K. (1961) Ordovician graptolites of North-west Nelson: Recent discoveries in the Aorangi Mine area. New Zealand Journal of Geology and Geophysics, 4:1, pp. 98-108. |