Numerous small gold mines have been worked in the vicinity of Coramba, Nana Glen, and the upper reaches of Tallawudjah Creek (19 to 32 km NW of Coffs Harbour. The most important mine was the Coramba King situated in the Parish of Moonee, County Fitzroy, about 1.6 km east of the Coramba Railway Station. The orebody is a lenticular quartz vein in altered claystones and tuff, ranging in thickness from a few centimetres to 2.1 metres in which sulphides of iron and arsenic occur. 

The Coramba Gold Field. (1895, January 12). Australian Town and Country Journal (Sydney, NSW : 1870 - 1919), p. 24

CORAMBA GOLD MINES. Opening of the Battery (1895, April 27). Clarence and Richmond Examiner (Grafton, NSW : 1889 - 1915), p. 8

A duck reared at Coramba apparently discovered a small gold mine before being sold and brought to Coff's Harbour. When killed and cleaned by Mrs. S. Brewis at Coff's a few days ago, several small specks of gold were found inside it. The duck had been domiciled at the Brewis home in Coff's for some weeks, so it is not certain whether the gold find was made at Coramba or Coff's. The specks were not very large, but it is possible that there are bigger ones where they came from.

Gold in Coramba Duck (1935, October 15). The Kyogle Examiner (NSW : 1912; 1914 - 1915; 1917 - 1954), p. 3

Rich mining history of northern NSW offers 'golden opportunity for tourism'.

Map of Coramba King Mine.