40 SYDNEY H. BALL: 
Allanite, one of the epidote family, containing cerium, is a rather 
widely distributed constituent of the granites and pegmatites. At Kara 
Akungnait (East Greenland) it occurs in considerable quantities, the 
largest crystals being 25 cm (10 inches) long. 
Monazite occurs in small crystals in pegmatitic quartz at Kekertak, 
Upernivik district. 
Tungsten, tantalum and niobium. 
Although wolframite and tantalite occur in the pegmatite at the 
southwest end of the cryolite body at Ivigtut, these minerals are not 
known to occur in commercial quantities in Greenland. 
Small quantities of fergusonite occur in granite pegmatite at several 
localities near Sardlok and at Kangek in the Julianehaab district. Yttro- 
titanite and polymignite are reported from the pegmatites of south 
Greenland. 
At Narsarsuk (Julianehaab district) some tantalates, including 
microlite and endeiolite, occur in the pegmatites of the soda syenites. 
Graphite. 
Although Greenland graphite deposits are not as yet important 
commercially, there is probably no other region in which the mineral 
is more widely distributed nor in which it occurs in more varied as- 
sociations. Indeed, it is so widely present, dependent on both basic 
and siliceous igneous rocks, that it may indicate that Greenland is a 
carbon-rich petrographic province. There is scarcely a 30 km (twenty 
mile) stretch of its coast without known graphite deposits. Graphite 
(“Akerdlusak” of the Eskimo) was known in comparatively early times 
(see page 15). 
The graphite occurs as а 
constituent of Tertiary basalt or of anorthite nodules therein, 
constituent of pegmatites, less commonly, of pegmatitic granites, 
lenticular masses, presumably of pegmatitie origin, 
tabular bodies and irregular masses in granite gneiss, 
flake graphite disseminated in granite gneiss, 
flake graphite disseminated in crystalline limestone, 
amorphous graphite and graphitic schist, a regionally metamorphosed 
carbonaceous mud, 
8. amorphous graphite and graphitic shale, representing coal beds 
or carbonaceous shales metamorphosed by the intrusion of peri- 
dotites. 
AS ie arate 
