220 K. JiMBö : 



A parallel growth of minute copper-pyrite crystals, on dark- 

 brown zinc-blende individuals, is found at Kayakusa in the 

 mining district of Ani. From this region, we found optically 

 anomalous specimens of zinc-blende, showing dark brown stripes 

 in yellow-coloured cleavage-pieces, beside numerous thin lamellse 

 with double refraction under the microscope. 



Thick deposits of the mineral are found in the mines of 

 Kamioka in Hida Province. 



Manga nese-bearino; zinc-blende found in the Saimyöji mines 

 in Ugo Province is massive, dark-brown coloured and nearly 

 opaque. It is associated with rhodocrosite besides a little pyrar- 

 gyrite, &c. 



17. Pyrrhotite. 



BizEN and other provinces in the western part of Honshu, 

 besides the province of Echigo, &c. are the localities of massive 

 pyrrhotite in metallic ore deposits. 



18. Pyrite. 



Beautiful crystals which are usually not rich in faces are 

 found according to Ko, in the mines of Udo, Ade and Adakai 

 in Izumo Province, of Osaeuzawa in Bikuchü Province, of 

 Ani and Arakawa in Ugo Province, of Ogoya in Kaga 

 Province and of Futto in Mikawa Province, besides in 

 Ogasawarajima (the " Bonin Islands " of foreign maps) 

 and other places. The crystals sometimes attain 6 cm. in 

 diameter. 



Udo (according to Hiki's description). — Beautifully shining 

 crystals of pyrite, often about 3 cm. in diameter, are here found most- 

 ly in the combination O. coO oo, but sometimes in O. «:> O ^•r^2"^J' 



