10 



ECONOMIC GEOLOGY 



LIME./TOM6 ^] QUARTZ. 

 JT-'.-'.'tj COAIWS SANDSTONE 

 ife^jP'Mg /ANOJTONE 5[ CLAY 



FIG. 6. Section showing both vertical and horizontal faulting of a vein, 

 Enterprise mine, Rico, Colorado. (After Richard.} 



FIG. 7. Illustrations of single veins repeated by faulting that left the 

 different pieces parallel. 



