170 



at the border between the larger individuals a new mineral 

 mass seems to be on the point of forming. Several intergrowths 

 between quartz and felspar remind one of micropegmatite. 



Deserving of mention is also a macroscopically gneissoid rock, 

 which was collected further north. It is more strongly crushed 

 and presents in its best preserved parts an almost granulitic 

 appearance, but at the same time characteristics that remind 

 one of true granites, e. g. micro-pegmatitic intergrowths. 



The other chief rock in this district is only come across 

 further inland at a height of about 500 m. It is a grey, gar- 

 netiferous gneiss, rich in felspar, quite unlike the other types 

 known to me from this coast. Microscopically it looks as if 

 the large, sharp, often crystallographically rectilinearly bordered 

 felspar individuals (mostly plagioclase) were, so to speak, ce- 

 mented together by a mass of strongly pressed quartz; more- 

 over, in the intermediate mass garnet and some altered biotite 

 occur plentifully. We also find in the rock beds that pass 

 over into true garnet-rock; the rounded, completely isotropic 

 grains of garnet are cemented together by quartz, micaceous 

 substance and ore. 



Just as at the spot further south, described above, so here 

 in the primary rock there occurs limestone in the form of large, 

 apparently lenticular masses. These limestones are of special 

 interest owing to their close connection with young alnöitic 

 rocks. It is well known that such a connection could apparently 

 be pointed out wherever similar eruptive rocks occur, and for 

 this several explanations have been adduced, among others, 

 that the limestone might constitute a direct crystallization pro- 

 duct of this extremely basic magma. However at the place 

 here described it does not seem probable that this has been 

 the case, at least not to any large extent. 



The limestone forcibly reminds one in its appearance of 

 the corresponding rock from Alnon in Sweden, for instance, in 

 its richness of foreign minerals, which, however, also applies to 



