82 



I'KNTTI KSK OLA. 



M.-X. Kl. 



mega.sco|)ically, appears by its lighter colour. This zone is a few centi- 

 meters thick. Besides the plagioclase, the labradorite-rock contains but trif- 

 ling amounts of other mini rals. Near the contact there may be seen some 

 prisms of green hornblende and anthophyllite (a -^= yellowish, [i -- greyish 

 green, y ~ greyish blue; y^fi^a; 2Vy — about 60 I, and more gene- 

 lally, though very sparingly, hypersthene. Euhedral crystals of garnet are 



Fig. II. Inclusions of olivine-rock in labradorite-rock. Aurlandstjord, Sogn. 

 (The ruler serving as a scale is 20 cm. long.) 



scattered sparingly in the vicinity of the inclusions and elsewhere, being of 

 general occurrence in the Sogn labradorite-rocks, as described by J. Rekstad.' 

 The rock also contains occasional grains of zoisite and green biotite. 

 The former of these occur, in a peculiar manner, in the midst of small 

 patches in wich the feldspar has been finely granulated. Granulation also 

 is common at the boundaries of the feldspar crystals (mortar-structure). The 



' J. Rekstad, P^ra Indre Sogn. Norges geol. Unders. Aarbog 1907, 7, p. 28. 



J. Rekstad, Geologiske iagttagelser fra stroket mellem SogneÇord, Eksingedal og 

 Vossestranden. Ibid. 1909, i, p. 6, fig. 2. 



