Tq2I. No. 8. ON THE ECLOGITES OF NORWAY 



A specimen from X aero dal. collected by Th. Kjerulf, exhibits a labra- 

 dorite rock containing numerous almost plate-formed dark inclusions, much 

 elongated in one direction and measuring as much as 2 cm in thickness. 

 They have border zones mainly composed of garnet as rounded crystals 

 whose interstices are filled up with pale green hornblende. These zones 

 measure 8 mm in maximum. Their thickness does not stand in anv relation 

 to the thickness of the inner zone and they are sometimes absent. The 

 inner parts consist of clinopyroxene of a pale violet colour. Thus these 

 inclusions, though in their outer zone much resembling the inclusions at 

 Aurlandsfjord, have quite another composition. 



Quite the same characters were observed in plate-shaped inclusiohs 

 in labradorite-rock from Brandsaetstolen, \'ossestranden. The 

 inner kernels contain brown hornblende, besides monoclinic pyroxene. 

 As in the former examples, the plagioclase in the close vicinitv of the 

 inclusions is more sodic than the average labradorite, here containing 

 but 40 per cent An. 



Brownish green hornblende besides garnet, hypersthene and diopsidic 

 pyroxene form similar inclusions in the labradorite-rock near Langenes- 

 baekken, Eidsfjord, from which locality specimens have been collected 

 by \\ M. Goldschmidt. Here the hornblende fills up the interstices between 

 the other minerals which are all rounded in shape. 



At the same locality, the main labradorite-rock is garnet-bearing. The 

 cr3'stals, with sharp boundaries, though rounded forms, are arranged in 

 parallel rows and with the garnet are associated grains of colourless 

 monoclinic pyroxene and brownish green hornblende. 



In the specimens from Langenesbaekken, as well, the plagioclase 

 in the vicinity of the inclusions is more sodic than in the average 

 labradorite-rock. 



Garnet-gabbro from Aardal, Sogn. 



A specimen of garnet-gabbro from the Tya transport way, Aardal, 

 Sogn, collected in 19 17 by Mrs. M. Johnson-Host, was analyzed by the 

 writer with the following result: 



