...also prevails in some of the later veins, such as the Blue, as well as in the older ones. Influence of country rock, — There is a distinct association...rock, as a result of the deposition of the ore by inetasoinatic replacement. Thus the Anaconda ledge is low grade where it crosses either the Bluebird...

...also prevails in some of the later veins, such as the Blue, as well as in the older ones. Influence of country rock. — There is a distinct association...rock, as a result of the deposition of the ore by mctasomatic replacement. Thus the Anaconda ledge is low grade where it crosses either the Bluebird...

...areas are wet, so that the miners say: "A dry and tight vein is barren; a wet and crushed one is rich." There is also a distinct genetic relation between...deposition of the ore by metasomatic replacement. Thus the Anaconda ledge is low grade where it crosses either the Bluebird granite or the Modoc porphyry,...

...also prevails in some of the later veins, such as the Blue, as well as in the older ones. Influence of Country Rock. — There is a distinct association...deposition of the ore by metasomatic replacement. Thus the Anaconda ledge is low-grade where it crosses either the Bluebird granite (aplite) or the Modoc...

...also prevails in some of the later veins, such as the Blue, as well as in the older ones. Influence oj Country Rock. — There is a distinct association...deposition of the ore by metasomatic replacement. Thus the Anaconda ledge is low-grade where it crosses either the Bluebird granite (aplite) or the Modoc...

...also prevails in some of the later veins, such as the Blue, as well as in the older ones. Influence oj Country Rock. — There is a distinct association...distinct genetic relation between ore and country rock, ^sa result of the deposition of the ore by metasomatic replacement, us the Anaconda ledge is low-grade...

...also prevails in some of the later veins, such as the Blue, as well as in the older ones. Influence oj Country Rock. — There is a distinct association...deposits with the Modoc porphyry occurrence, since the mcst productive lodes occur in the area penetrated by this rock. The veins cross the porphyry, however,...