mrmr'inifiA 
Df;PARTMENT OF THE INTERIOR 
UNITED STATES GEOLOGICAL SURVET 
GEORGE OTIS SMITH, Director 
Bulletin 580—B 
NOTES ON THE 
IINAWEEP COPPER DISTRICT, C0I/)RA1)0 
BY 
B. S. BTTTT.ER 
CONTRIBUTIONS TO ECONOMIC GEOLOGY, 1913, PART I—B 
m 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
. 1911 
Monograph 
