On the Mineralogy of Chester County, Penn. $>c. 9 



Specular oxide of iron, in quartz, near London Grove mee- 

 ting house. 



Mica, of a leek green color, on W. Jackson's farm. 



Cyanite, in fascicular groups, of bladed crystals, of a pale 

 and sky blue color, on W. Jackson's farm. 



Black and reddish brown schorl, in acicular diverging crys- 

 tals, and fibres in quartz, on W. Jackson's farm. 



Smoky quartz, six sided prisms, detached in the soil, on W. 

 Jackson's farm. 



Calcareous spar, striated diagonally, to the rombic cleavage, 

 on W. Jackson's farm. 



Dogtooth spar, of a straw yellow color, in semi-transparent 

 crystals, in W. Jackson's lime quarries. 



Epidote, in hexahedral prisms, of a bottle green color, in 

 Mitchiner's lime quarry. 



Red jasper, in detached masses, on W. Jackson's farm. 



New London Township. 



Fibrolite, in delicate fibres, intimately connected, of agreyish 

 white color and glistening aspect, on Robert Hudson's 

 farm. 



Schorl, in cylindrical crystals, of a jet black color, same lo- 

 cality. 



Sundry Localities in Chester County. 



Zoisite, in rhomboidal, cylindrical and acicular crystals, of a 

 grey color, in gneiss, in Bathwoods, near West Chester, 

 West Goshen township, discovered by Townsend Haines, 

 Esq. 



Oxide of iron, the red hematitic variety, on the serpentine 

 ridge, Nottingham township. 



Magnesite, forming narrow veins, in the serpentine ridge, 

 West Goshen. 



Mica, in beautiful hexahedral prisms, Kennet township. 



Stalactical carbonate of lime, of a snow white color, in arbo- 

 rescent, reniform, mammilary and botryoidal concretions, 

 in John Robert's lime quarry, West Whiteland, Chester 

 county, four miles north of West Chester. 



Actynolite, in chlorite slate, near Waggontown, Chester 

 county. 



Amianthus, in delicate silky fibres, forming minute veins in 

 serpentine, Joseph Taylor's quarry, West Goshen, near 

 West Chester. 

 Vol. XIV.— No. 1. 2 



