I92I. Xo. 8. ON THE ECLOGITES OF NORWAY. IO5 



The anahsis of pure hornblende, made by the writer, gave the 

 followins: result: 



99.90 



Sp.g. = 3.27 (> 3.250 < 3.290I. 



ß -— 1.675 i 0.002. Y — y. = 0.016 approximately, the negative acute 

 axial angle 2\' = 75 appr. Axial dispersion not noticeable. ß = b; 

 c : Y =: 18^ appr. Pleochroism : x = yellowish green, |i = dark olive green, 

 Y = dark green. Absorption : z <^ y "^ ß- 



The mechanical analysis of the garnet-amphibolite gave the following 



result : 



Iron ore 4.0 ^ 



Titanite 3.0 



Hornblende 39.4 



Garnet 16.4 



Biotite 1 ^ 



6.0 



Apatite j 



Ouartz I 



314 

 Plagioclase .... I 



100.2 



The iron ore proved titaniferous, but a qualitative test made it pro- 

 bable that the ilmenite compound is rather subordinate. I assumed i ^0 

 ilmenite and 3^0 magnetite. 



The titanite which is present as large elongated individuals of irregular 

 shapes, was separated in a very pure form. 



