416 



UNITED STATES. 



of a hazie nut, to the value of several hundred dol- 

 lars. 



Very brilliant auriferous pyrites, which yielded 

 one per cent of gold, 70 of iron, and 29 of sulphur,, 

 was found in Virginia, according to the analysis of. 

 Dr. Seybert of Philadelphia. 



The following species of copper ore have be^ii . 

 found in the United States. 



1. Native copper in Lancaster and York counties. 

 " Pieces of a very pure native copper have been 



also lately procured near Woodbridge, New Jersey. 

 The matrix of the metal is a dark coloured or black- 

 ish kind of rock. This, however, is very brittle, 

 and may be easily broken by an hammer, or eveu 

 crumbled to pieces by the fingers. The metal, in 

 its proper form, is dispersed through this earthy 

 mass. In some places the copper is dispersed through 

 every part in the form of specks resembling filings, 

 which shine when the ore is broken ; but a more 

 eommon appearance is that of leaves, or plates of 

 native copper, which are interspersed between the 

 lamina into which the stone breaks, and present 

 bright and beautiful surfaces. Some of these natu- 

 ral films, or sheets, are almost as thin and delicate 

 as gold leaf, while others are so thick and extensive, 

 as to resemble rolled copper or old sheathing. Now 

 and then the workmen find more solid and ponderous 

 masses. Efforts are making to discover more of this 

 remarkable deposition of copper."* 



2. Azure copper ore in Berks county Pennsylva- 

 nia, and near the river Rariton in New Jersey. 



3. Malachite, in Berks county, Pennsylvania, and ^ 

 at Schnyler's mine in New Jersey. 



i MeJi. Repes. 



