E. MINERALOGY AND GEOLOGY. 117 



in groups of maculed prisms, of a lead-gray color, with a faint 

 metallic lustre. A native silicate, hitherto undescribed, has 

 been called Bismuthoferrite by Frenzel. This occurs at 

 Schneeberg, in Saxony. Other new species, described by 

 Weisbach, are Trbgerite audWalpurgine. 16^1, April, 1872, 

 261. 



ILSEMANNITE, A NEW MINERAL. 



A mineral which has been termed ilsemannite has lately 

 been described as new by Hofer, and as occurring in some 

 heavy spar from Bleiberg. From its chemical composition 

 it is believed to be a product of the decomposition of wul- 

 fenite. 13 A, January 1, 18*72, 15. 



MONZONITE, A NEW MINERAL. 



Yon Kobell describes a new mineral, called monzonite, as 

 occurring in Monte Monzoni, in the Fassa Valley. 21 A, De- 

 cember, 1871,1178. 



NEW MINERALS. 



The discovery of two new mineral substances has been an- 

 nounced, under the names of cendeo-lactine and variscite. 

 The first-named occurs in Nassau, in abed of brown iron ore, 

 where it is found in threads and veins, and in cliffs in botry- 

 oidal and reniform masses. It consists of thirty-seven parts 

 of phosphoric acid, thirty-nine of alumina, and twenty-three 

 of water. The variscite occurs in Saxony in quartz in sili- 

 cious shale, and is quite similar to ceruleo-lactine, and also 

 consists of phosphoric acid, alumina, and water, with a few 

 other ingredients. 21 A, Nov., 1872, 1014. 



CORUNDUM IN NORTH CAROLINA. 



Professor Leidy, at a meeting of the Philadelphia Academy 

 of Sciences, on the Gth of February, exhibited specimens of 

 corundum from Macon County, North Carolina, which, he 

 said, were especially interesting, as they consisted of frag- 

 ments of large crystals of gray corundum, containing in the 

 interior dark blue sapphire, and coated on the exterior with 

 bright red ruby. One pyramid of a large crystal from the 

 same locality recently brought to that city weighs 300 

 pounds. 12 B.Feb. 6, 1872. 



