1813.] VICINITY OF PHILADELPHIA. 481 



The massive variety was found by Mr. V.inuxem 

 and myself, on the Baltimore turnpike, one mile from 

 t!ie bridge. 



Fluate of Lime. Chaux fiuatde. H. Fluor Spar. W. 



Mr. Vanuxem proved a mineral to be fluate of lime, 

 which was given him by Mr. Hagner, about two years> 

 since, from the quarry of gneiss at the falls of Schuylkill. 

 Colour violet blue. No determinate crystallization. 



Sulphate of Barytes. Baryte, W. Baryte sid- 

 phatie. H. 



This mineral is found in considerable quantities at 

 the lead mines at Perkiomen, both compact, and crystal- 

 lized in a crested form, of a white colour, sometimes tar- 

 nished by iron either yellow or black, forming fine spe- 

 cimens. It is associated with lead, quartz and iron. 

 About three miles west of Newhope, it occurs in con- 

 siderable quantities, compact and crystallized, in the 

 old red sandstone formation, with a small quantity of 

 copper. 



COMBUSTIBLES. 



Amber. Siiccin. H. 



Amber has been found in small quantities at Cros- 

 wicks creek^ about one mile from Bordentown; and on 

 the Delaware, at Whitehill; in both places with pyrites 

 and carbonised wood. Clevelaiul says, it also occurs near 

 Woodbury, in large plates in a bed of marl; and at Cam- 

 den, opposite the city, v, here a large peice had been found 

 in a stratum of gravel. 



