NOTES ON THE MINERALS OF JAPAN. 263 



kaidö (see Jimbö's " Geological sketch," 1892) ; also in a chlorite 

 schist of SuKEGAWA ill Hitachi. 



102. Serpentine. 



Various kinds of peridotites, gabbros and serpentines are 

 found in different parts of Japan (see Harada's Japanische 

 Inseln, 1889). The ophicalcite of Kanasaki in Musashi and the 

 serpentin ized peridotite of Machiya in Hitachi are very beautiful 

 when polished. The latter shows black-coloured patches on a 

 white ground. The black colour is due to chromite grains 

 secreted out, while the white part consists of serpentinous and 

 other secondary substances. 



Asbestus of economic interest is found in the serpentines 

 of several places, the most important of which are in the pro- 

 vinces of HiZEN and HiGO. Nasa has given the principal 

 localities of Japanese asbestus. 



103. Talc. 



Greenish-white irregular plates of talc are found at Ogushi 

 in Hizen ; a pseudomorph after tremolite is found in the crystal- 

 line limestone of Kawahake in Shinano. 



104. Agalmatolite. 



At MiTsuiSHi in Bizen Province, agalmatolite, connected 

 with liparite and believed by Kochibe, &c. to be an alteration 

 product from its tuff, is found in the form of grey, white, 

 yellowish or brownish masses. 



105. Nepheline. 



Ogawa has observed this mineral as a microscopic ingredi- 



