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very noteworthy one: Narsarsuk’s mineral locality. Here the 
rare minerals occur in pegmatitic segregations belonging to 
the augite-svenite, and consequently their occurrence should be 
treated here. 
The augite-syenite by ils disintegration has formed a fairly 
level plain called Narsarsuk (Pl. XVII) at the western side of the 
foot of the Igdlerfigsalik Mountain. It is situated at an altitude 
of 250—300 meters and has an area of a few square kilometers. 
The plain is entirely denuded of vegetation, and is covered by 
coarse rubbish of decaying augite-syenite, the wind having car- 
ried away all fine material. In a closely defined area not 
more than a hundred meters in diameter an amazing number 
of rare and well crystallized minerals have been found, mostly 
loose in the rubbish, but belonging to the rock disintegrated 
on the spot. The mineral locality is about 270 meters above 
sea level, a little less than one kilometer south of the southern 
end of the moraine near the entrance to the Korok Fjord. The 
spot is marked by a cross on the geological map (Pl. IV). 
The locality was not known until 1888 when the Green- 
landers from Igaliko took Юг. Sreexsrrup to the place where the 
large egirine crystals, which are now familiar to all collectors 
of minerals, were found. A few years later neptunite and other 
rare minerals were found by the Greenlanders, but a thorough 
mineralogical investigation of the locality was not undertaken 
until 1897 by Dr. G. Frisk who found a large number of new 
minerals 1. 
Each year since then the Greenlanders from Igaliko have 
searched for minerals on the Narsarsuk, and several European 
mineralogists have visited the place, but only some few fresh 
discoveries have been made*. 
1 G. Fuink, Berätteise om en Mineralogisk Resa i Syd-Grönland 1897. 
Meddelelser om Gronland XIV, p. 223. 
2 0. В. BOcciLp, On some minerals from Narsarsuk. Meddelelser em 
Grønland XXXIII, p. 97 (1906). 
