I 



Ihe expeditions sent to Greenland in the years 1903 and 1904 

 by the merchant Mr. A. Bernburg, Copenhagen, collected, in the 

 Julianehaab District, some of the rare minerals found there. 

 Mr. Bernburg permitted the author to look through the collection, 

 and it was found that the minerals from the locality Narsarsuk 

 showed several new and peculiar features, and so it seemed 

 that a more particular examination of them might be of great 

 interest. 



By the inspection of the material the fact was immediately 

 noticeable that most of the minerals were found in crystalline 

 forms deviating rather highly from these hitherto known; these 

 latter forms were either not present at all, or only in very 

 slight numbers in comparison with the new forms. Thus it 

 would seem that almost the whole collection has been obtained 

 from a pegmatitic mass, not known before. This view is especi- 

 ally corroborated by the fact that a mineral not hitherto known 

 from Narsarsuk, viz. Astrophyllite, is found in connection 

 with almost all the minerals that have been carried home. 



Besides the minerals enumerated and more particularly 

 described hereafter, there have still been found in Mr. Bern- 

 burg's collection the following minerals : microcline , albite, 

 aegirite, quartz and rhodocrosite ; of these the feldspars have 

 not been described, as they will later be more particularly 

 described by other mineralogists; the aegirite, quartz, and 

 rhodocrosite are found in rather insignificant specimens, and 

 present nothing especially new. 



