78 JOURNAL OF THE 



Thiirach has shown that microscopic zircon is rarely 

 absent from the archaean and sedimentary rocks. It also 

 occnrs in very many ernptive rocks, and it is widely dis- 

 tribnted in basalts and dolerites. 



Corse reports many localities where it is fonnd in Italy, 

 among them the anriferons sand of Ticino, volcanic sand, 

 and the shore sands of the Tyrrhenian Sea. 



The world's main supply, however, if the demand 

 increases, must come from the enormous quantities in the 

 Ural Mountains and in Norway, and from the great and 

 easily workable deposits of Green River, N. C. , and Ander- 

 son, S. C. Hitherto it can scarceh' be said to have been 

 mined in more than one locality. Green River, N. C. 



As to other minerals besides the zircon containing zir- 

 conium, we have a few, but they are rare and apparently 

 exist in small quantities. 



First there are the altered zircons: Auerbachite, Mala- 

 cone, Cyrtolite, Tachyaphattite, Oerstedite and Bragite. 



It is also found in Eudialite, Polymignite, Aeschinite 

 and Fergusonite. 



THE MAGNETIC IRON-ORES OF ASHE 

 COUNTY, N. C* 



BY H. B. C. NITZE. 



At a time when the mineral resources of the Southern 

 States are attracting such wide-spread interest and atten- 

 tion, I have thought it appropriate to give a short general 

 description of the iron-ore deposits of a territory concern- 



=Pul)li,shed in Transactions of the American Institute of Mining- Kngineers. 1892. 



