NOTES ON THE MINERALS OF JAPAN. 269 



Black oxides of manganese are associated with these 

 rhodonite specimens. 



113. Tremolite. 



This mineral is found as fine-fibrous aggregates in the 

 crystalline limestone of Ishigure in Ise, where wollastonite is 

 found in a large quantity. At this place, the granite, which has 

 altered the palaeozoic rocks, contains fluorite veins. 



A pseudomorph of white talc after tremolite was found by 

 Hoshina in the crystalline limestone of Kawahake in Shinano. 

 The original form of the tremolite, as columnar aggregates with 

 characteristic prismatic angles, is distinct. 



114. Hornblende. 



Loose black crystals, about 1 cm. long, of porphyritic horn- 

 blende, are found covered with grey and brown secondary sub- 

 stances on a road ascending to the mountain of Hakusan in 

 Kaga. Crystal faces are ccP^ od P a>, oP and P. Twins on 

 GO P 0) are numerous. 



115. Glaucophane. 



Blue-coloured glaucophane-schists and other rocks containing 

 glaucophane, are found in different parts of Japan. (See Koto's 

 note on glaucophane, in the Journal of the Science College of 

 the Imperial University of Tokyo, 1887). 



116 Beryl. 



Takayama, &c. in Mino. — There are sometimes found light- 

 bluish to nearly colourless crystals and radial aggregates of beryl. 

 They are often found together with smoky quartz, &c. in the 

 pegmatite of this region. The individuals attain more than 



