326 QUICKSILVER DEPOSITS OF THE PACIFIC SLOIU-:. 



metal worth $350,000. It was producing in 18G0 and is said to have 

 yielded about nine thousand flasks. 



The Guadalupe. — Over fifty thousaud flasks of quicksilver have been pro- 

 duced from the Guadalupe, which was closed at the time of my visit, though 

 it had been working in the preceding year. Cinnabar has been found at a 

 great number of points on this property over an area of about a half a mile 

 square. The only deposit of large size detected cropped out about one 

 luindred and fifty feet north of the creek and has been followed down- 

 ward for over seven hundred feet. The strike of the main bod}* was about 

 east and west magnetic ; but to the east seams have been followed on 

 a more northerly course which led to small bodies of ore. The dip is 

 southerly and the greater part of the mine lies south of the creek. The ore 

 and the associated substances are said to have resembled those of New 

 Ahnaden, but I have been unable to obtain any particulars of interest. A 

 small quantity of ore was obtained from the " Oflice mine," a small excava- 

 tion on a cropping some two hundred and fifty feet north of that of the 

 main mine. Some of the other numerous superficial workings have also 

 yielded ore. 



These excavations have obscured rather than revealed the structure of 

 the country, and I was unable to make observations sufficiently definite to 

 justif}' important conclusions. It certainly is improbable that the resources 

 of the locality are exhausted. The most evident course to be pursued is 

 further exploration along the fissures developed by the main mine. Were 

 the old tunnels and superficial workings which dot the surface cleaned out, 

 it is also possible that a careful study would reveal other fissures which 

 might be ore bearing in depth ; but there is no certainty that the search 

 for ore bodies would prove successful. Quicksilver deposition in the Coast 

 Ranges has been very irregular and study of the geological phenomena 

 shows that this is an almost necessary consequence of the structure. The 

 only way for quicksilver miners to keep up the value of their property is 

 to study the fissure system with the most earnest attention from day to day 

 and to do their prospecting while in bonanza. Prospecting when all the vis- 

 ible ore has been extracted and the old workings have become inaccessible 

 is little better than ffuess-work and seldom meets with much reward. It is 



