KAMANISTIQUIA SILVER-BEARING BELT. 



9. Hexag. tables — rai-e. 



253 



10. Hexag. jjyramid with basal plane, and prism 

 l^lanes, rare. 



11. Hexag. j)')'ism and hexag. jiyramid. 



Many other forms including several twin forms — rhombohedrons 

 and others. 



The calcite at times occupies the vein entirely. It is then usually 

 drusy and accompanied by nuggets of argentite. 



Quartz. 



Usually massive white crystallized in short 

 hexagonal pyramids, the prism planes being very 

 short — amethyst smoky brown, pink. I observed 

 one twin form as figured. 



Note. — Frequently the vugs in the massive quartz contain nodules 

 of argentite to which seams lead and through which evidently the 

 sulphide has penetrated. 



Iron Pyrites. 



Present in considerable quantities in some veins, associated often 

 with the argentite, and also with the mountain tallow. It is fre- 

 quently plentiful in the slate lying next to the vein. 



Crystallized cubes — cubo-octohedrons. 



Baryta. 



This not present in any great quantities in any of these veins. 



Galena. 



Usually present in all these veins in a greater or less degree. 



