Marlion

Marlion was a planet famous for its crystal mines.

Iris Wildthyme and Jenny Winterleaf once helped the Second Doctor defeat the Dalek Supreme in the crystal mines of Marlion. (PROSE: Verdigris, PROSE: Bafflement and Devotion, AUDIO: Excelis Dawns)

Huxley claimed that Jo Grant encountered Daleks on Marlion during her travels with Iris Wildthyme. (AUDIO: Find and Replace)

The Diamond Mines of Marion were a location in Reginald Tyler's The True History of Planets. (PROSE: Mad Dogs and Englishmen)