Open AccessThe Black Angel lead-zinc mine 1973–90
Author(s) -
Bjørn Thomassen
Publication year - 1991
Publication title -
rapport
Language(s) - English
Resource type - Journals
eISSN - 2597-2944
pISSN - 0418-6559
DOI - 10.34194/rapggu.v152.8154
Subject(s) - zinc , tonne , lead (geology) , metallurgy , environmental science , mining engineering , mineralogy , geology , waste management , engineering , materials science , geomorphology
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.