The Black Angel lead-zinc mine 1973–90

On 25th July 1990 the last ore was processed in the ore dressing plant at Mårmorilik thereby terminating seventeen years exploitation of the Black Angel (Sorte Engel) lead-zinc deposit (Fig. 1). During that period some 1.4 million tons zinc, 0.4 million tons lead and 250 tons silver have been extracted from the deposit which originally comprised 13.6 million tons ore grading 12.3% Zn, 4.0% Pb, 29 ppm Ag and 13.7% Fe (Table 1). The mining operations ceased because the extractable ore reserves were exhausted.