262 Descriptive CntaJogue of RocJcs and Minerals. 



52. Sulphuret of Iron, (capillary pyrites? Jameson^ 

 3,210.) From the banks of the Neuse near Waynesborough, 

 found imbedded in an earth that is full of copperas, which 



effloresces on its surface, and is manufactured by the in- 

 habitants for use. This pyrites also decomposes on the 

 surface of the ground and forms copperas. 



53. Porous Basalt? from the vicinity of the natural wall 

 [Basaltic Dvke] in Rowan. Js it similar to the Dutch Ter- 

 ras (Aikin's.Dic. Art. Cement,) and would it answer for 

 hydraulic mortar? 



54. Cubes of Sulphuret of Iron^ exceedingly common 

 in this region- On the Haw River they occur in such 

 abundance that an individual, it is said, supposing them to 

 be valuable, collected several bushels of them. They are 

 frequently striated on the sides, the striae of two contiguous 

 sides being at right angles. 



55^ Epidote in quartz, found in a small vein crossing 

 clay slate. 



56. Stokes Limestone with Magnetic Pyrites* When the 

 iron is disseminated through the mass, (as is frequently the 

 case,) would not this lime serve as a water cement? 



57. Pyrites^ same as 53, added to shew their sonorous 

 properties when struck together- 



58. Light coloured hornstone in stripes passing into 

 flint. 



59. Native Iron^ fragment of a specimen from Randolph 

 Co- weighing two pounds Avoirdupois. It exhibits the fol- 

 lowing characters : 



Nodular, having one side distinctly plated. 



Hard, assuming under the file the lustre of steel. 



Highly magnetic. 



Specific gravity, 7.4. 



Fracture metallic and white like cast stecK 



Breaks under the hammer. 



It was found in the vicinity of a bed of iron ore, of the 

 argillaceous kind ; but no similar piece has been discovered, 

 nor has any effectual search been made for it. Examine 

 for niekel. 



F 



60 — 64. Varieties of ^'ovaculite found in the neighbour- 

 hood of this village. Ko. 60 and 61 are suppossd to be the 

 genuine Whet-Slate of Jameson, or Turkey Oil Stone, 

 described in Rees' Cyclopaedia. They are partially faced 



/ 



