DIVISION OF MIXES 



BULLETIN 141. PLATE 2 



A, PANORAMIC VIEW TOWARD 

 THE EAST 



From rhyolite remnant on resurrected Eocene 

 surface one mile east of Angels Camp. Other 

 remnants of rhyolite tuff may he seen in the mid- 

 dle distance. Photo ly Olaf P. Jenkins. 



B, THE "MOTHER LODE" 

 Prominent quartz outcrops of the Mother 

 Lode system as seen at the Harvard mine near 

 Jamestown. Photo l>y Olaf P. Jenkins. 



C, "TOMBSTONE ROCK" OF VOLCANIC 

 AGGLOMERATE 



Occurs one mile west of Copperopolis on the 

 Farmington road. Photo lnj OInf P. Jenkins. 



D, SMALL ANTICLINE IN SLATE ALONG 

 MARIPOSA CREEK 



Folds are along actual slate beds and not 

 along slaty cleavage lines. Photo by Olaf P. 

 Jenkins. 



E, TYPICAL VIEW OF THE SIERRAN 

 FOOTHILLS 



Near Mount Gaines mine. Hornitos district, 

 Mariposa County. Photo btj courtesy of Francis 

 Frederick. 



F, UNDERGROUND VIEW 

 In Alhambra mine near Garden Valley, El 

 Dorado County. Note the free gold showing in 

 patches in white quartz. Phulo by i-ourtesy of 

 Francis Frederick. 



