188 IK M. Foote — Native Lead at Franklin Furnace, N. J. 



mately associated similar scales of native copper. Another 

 specimen, consisting of garnet and brownish roeblingite, exhib- 

 its two irregular masses of lead 1 to 2 mm. diameter; also 

 scales of lead and a globular mass of the metal with a white 

 crystalline coating, and intermingled with a mass of copper. 

 With it occur minute tabular crystals of an undetermined 

 mineral. A mass of axinite, willemite, garnet, phlogopite and a 

 new brick-red, lead-iron-calcium silicate," shows a vein of copper 

 crystals. They are irregularly distorted dodecahedrons, and 

 pass into rough bands, where traces of lead are discernible. 

 The fourth specimen is a compact form of pale yellow resinous 

 polyadelphite, showing minute nuggets and films of lead and 

 copper. JSTo traces of lead crystals were observed. 



The finding of roeblingite and another lead silicate in this 

 vein with native lead, presents an analogy to that recorded at 

 the prominent locality of lead, Langban, Sweden. Here it is 

 found with a mineral containing lead silicate, ganomalite. 

 This double occurrence of the metal with its silicate perhaps 

 offers a field for investigation. 



Besides adding one more species to the list of a locality 

 famous for the number and variety of its minerals, the discov- 

 ery is of interest because of the doubt surrounding the re- 

 ported finds of lead outside of Sweden. 



July 13, 1898. 



- S. L. Penfield and H. W. Foote, this Jour., vol. v, p. 289. 



