150 CORUNDUM^ ITS OCCURRENCE AND DISTRIBUTION. 
the surface. This surface corundum has been found for a number of 
miles to the southwest of this toAvn. AUhou<>-h no corundum has 
been found in phice, it Avas probably derived from a mica-schist, for 
the country rock in this section is largely a schist, and corundum 
crystals Avere found with portions of the mica -schist attached to 
them. The crystals are all rough, and A^ary from small ones to some 
that AA^ere OA^er 3 inches long and 1 inch in diameter. 
Oconee County. — Corundum has been found on the surface in this 
county, but none has been found in place. 
Yoi'k County. — In the northern part of this county, at Energy, 
near the North Carolina line, a black corundum has been found quite 
abundantly. (See p. 130.) 
UTAH. 
It is reported that a large deposit of corundum AA\as found in this 
State in 1900, but no accurate information has been thus far obtained 
regarding location or quantity. 
A'IRGINIA. 
Louisa County. — Deep blue crystals of corundum haA^e been found* 
in the soil in this county, but the 'exact locality is not knoAA^i. 
PittHylvania County. — Emery. (See p. 140.) 
Stiiai't. — Corundum has been found in a mica-schist near this place 
on Bull Mountain. (See p. 55.) No deA-elopment of the occurrence 
has been made to determine the extent of the deposit or the percent- 
age of corundum. 
^VhittleH.—Em^vJ. (See \). 140.) 
ALASKA. . 
Copper River. — Asteriated corundum of gray and pink colors is 
said to occur in a locality on Copper RiA^er, Alaska. 
DISTRTBITTTON OF C ORtTISTDUM IN^ FOKETGK COUIN^TRTF.S. 
Until AA^ithin the last fcAA' years there AA'ere no localities outside of 
the United States where corundum Avas mined for abrasiA^e p.irposes, 
AAith the exception of the emery (lei)osits of Turkey and of the 
Grecian Archipelago. This condition is uoaa^ changed, and corundum 
lias been mined in India and exported to the United States and to 
Europe. During 1901 the Canadian deposits of this mineral AA^ere 
commercially deA'eloped, the product going principally to Europe and 
the United States. This i)roduction has continued to increase each 
3^ear since that time. Short descriptions are given beloAV of those 
deposits that are of connnercial importance. 
