234 



K. JIMBO : 



found in the tuff of Takeshi in Shinano Province, (shows co O co 

 and [^V"]' ^^^ seldom O besides. 



45. Asbolane. 



This mineral is found in gravels in Owaki Province, whence 

 it is taken for use in porcelain works. 



D. Haloid Salts. 



46. Cerargyrite. 



Wada possesses a crust-like specimen from Nukumi in Satsu- 

 ma Province, resembling common cerargyrite in appearance. 



47. Fluorite. 



The principal localities of fluorite in Japan are Öküradani 

 in Obira in Bungo Province, Ishigure in Ise Province, Omodani 

 mines in Echizen Province, Hödatsusan in Noto Province, &c. 

 The fluorite of Obira is colourless to light rose-coloured, con- 

 tains bismuth on its cleavage cracks, and forms part of copper 

 veins. That of Ishigure is green or dark-purple coloured and 

 forms veins in granitite; here good crystals, with O alone or with 

 CO O CO, O and co O, are sometimes found. Octahedral crystals 

 have also been found in the mines of Ashio, &c., while cubical 

 crystals are more common in other localities. The face 2O was 

 observed in a single colourless crystal from Obira measuring 

 about 1 cm. in diameter and showing an octahedral habit. 



48- Thomsenolite (?) and Ralstonite (?). 



Wada possesses a single small specimen said to be from Tano- 



