Geology of Deerjield, S^c. 113 



a. Greasy Quartz — in same place. 



7. Pseudomorphous Quartz — in greenstone, Deerfield. 



8. Lamellar Quartz — in same place. The laminae some- 



times penetrate crystals of common quartz. 



9. Tubular, or Pectinated Quartz — in same place. 



10. Quartz Geodes — in same place. 



Prase — in the north part of Sunderland. (Not goad speci- 

 mens.) 



Amethyst — in Greenstone, Deerfield : the colour is not 

 deep, but delicate. 



Chalcedony — in same place — considerably abundant, but 

 generally in small masses. 



Carnelian — in same place, not plenty. The chalcedony, in 

 some specimens, seems to be passing into cacholong, and 

 the carnelian into sardonyx. 

 sSgate — in same place. It is made up of chalcedony, carne- 

 lian, and quartz. They are generally small, but some 

 are elegant. 



Jasper, red, and yellow: — found in rolled masses on the banks 

 of Deerfield river and in Leyden. Some has been found 

 imperfectly striped. It occurs frequently as it was formed 

 by the aboriginals into barbs for pikes and arrows. 



Petrosilex — on the banks of Deerfield river — not good speci- 

 mens. 



Feldspar — the red variety occurs in puddingstone, Deer- 

 field. It is not necessary to mention any other locality of 

 a mineral so common. 



Hornblende — very abundant — mostly black in this vicinity. 



Mica — this is very abundant on the east side of Connecticut 

 river. Some crystals of it have been found in Amherst. 



Talc — in Shutesbury. 



Steatite. The localities of this are seen on the section. 

 The aboriginals formed many articles from this mineral, 

 as pots, pipes, &.c. 



Chlorite — in Shutesbury : also in amygdaloid, Deerfield. 

 In Deerfield academy there are some Indian pipes of this 

 mineral, well wrought. 



Green Earth — in small quantities, m amygdaloid, Deerfield^ 



