34 Sypney H. BALL: 
The King Frederick VII mine. 
This copper mine is situated on a small island 8 km (5 miles) east 
of Julianehaab. It was discovered about 1800 by the Eskimo Srucke 
and to determine the value of the discovery, GIESECKE was sent to 
Greenland; he decided it was not exploitable. In 1851 Lunpr worked 
there six months and by winning about 15'/, tons of sulphide ore ex- 
hausted the deposit. At least one attempt has been made in recent 
years to work the deposit. 
TI did not visit the deposit, but, from reports and samples examined, 
it appears to have been an irregularly domical mass of quartz, about 
5.5m (18 feet) long, in pink biotite granite. In the quartz, in addition 
to inclusions of granite are both bornite and chalcocite, and less secondary 
malachite and azurite. The two sulphides are intergrown in masses 
which reach a maximum diameter of 5 cm (2 inches). Sulphides also 
occur in quartz stringers in the granite and chalcocite also fills 
fractures in the same rock. The ore is reported to carry a fair silver 
content and a trace of gold. The copper ore appears to have been super- 
ficial and the better ores in part at least were due to secondary enrich- 
ment. 
Miscellaneous copper occurrences. 
On the south shore of the small peninsula on which Godhavn is 
situated, pegmatitic quartz grading into felspar-quartz veinlets enclose 
small masses of chalcopyrite. Quartz-epidote veins at Umanak containing 
chalcopyrite, pyrite and secondary chalcocite and malachite are probably, 
although less certainly, of pegmatitic origin. 
Søndre Stromfiord and Atanek fiord are the centres respectively 
of areas of 9 000 and 2 600 km? (3 500 and 1 000 square miles) in which 
chrysocolla stains and incrustations are abundant. These oxidized 
copper minerals have originated in post-glacial time, under Arctic 
climatic conditions. The copper is presumably derived from pyrite, a 
fairly constant constituent of an amphibolite (mashed diabase) to the 
surface of which the chrysocolla is largely confined. 
On Nunasarnak Peninsula, south Greenland, the horizontal Devon- 
ian(?) sandstone is overlaid by lava flows of trachy-dolerite and sodic 
trachytes. Mr. Hora found in the much altered lavas nodular masses 
of epidote, bornite, chalcocite and malachite. 
Iron. 
The iron resources of Greenland are small and, commercially un- 
important, but are nevertheless of considerable scientific interest, 
particularly the native iron of the Disco region. 
