87 
175 feet, and weighing about 12,000 pounds. Numerous large 
deposits of low grade nickel ore have recently been discovered in 
P. Limonite ( brown oxide of iron ), from Russia. 
Q. Zinc-lead ore, France. 
R. A tall pyramid of oxidized iron ore, from Greece, and 
numerous other specimens from different foreign and American 
localities at the base. 
S. Hematite (red oxide of iron ), Wyoming. 
T. Copper ore ( bornite ), Cape Colony, South Africa. 
U. Large mass of Calamine ( zinc silicate), Arkansas. The 
weight of this mass is about 10,000 pounds. 
