276 K. jiMBo : 



At Nikkö the mineral has been found in fine short needles, 

 together with chabasite, desmine and calcite, all of which occnr 

 in a dark-brown decomposed andésite. 



At Maze, beautiful colourless needles of natrotite are associat- 

 ed with pretty druses of apophyllite and aiialcime, together with 

 calcite, heulandite and chabasite, which are all found in a grey 

 volcanic rock with amygdaloidal cavities. 



At Shioda, a dark-coloured andesite-agglomerate contains 

 apophyllite, heulandite, chabasite &c., together with radial groups 

 and aggregates of natrolite, which sometimes show pyramidal 

 endings. 



The natrolite of Ohara is in the shape of felt-like aggre- 

 gates found in andésite, together with heulandite druses and less 

 numerous desmine, epistilbite (?), &g. 



Optical anomaly of uatrolites from the four above-mentioned 

 localities consists of undulatory extinction of the needle-shaped 

 individuals which are often apparently twisted. 



124 Apophylite. 



Shioda in Shinano. — Aggregates of small greenish- white 

 crystals of apophylite are sometimes found attached to natrolite 

 aggregates of this locality. Less numerous than this apophylite 

 is a reddish-white variety in larger individuals, sometimes about 

 0.5 cm. in diameter. Both varieties show coP co,P, &c. and division 

 into sectors, like that in the specimens from Golden in Colorado. 



Maze in Echigo. — Colourless to greenish- white partly trans- 

 parent pyramidal crystals of apophyllite with oP, co p oo and 

 P, sometimes measuring 5 cm. along the c axis, show the same 

 optical anomaly as the apophyllites of Shioda. Crystal faces are 

 sometimes covered with sub-individuals. 



