Bulletin . 12. North Star;13. Stayton. Alpine Quicksilver Mining Company (one time called the Esmer-alda Quicksilver Mining Company). H. B. Leonard, manager, SanBenito; D. McPhail, Hollister, Cal., secretary. The company owns 32full claims in Sees. 13 and 14, T. 18 S., R. 11 E., 6 miles from Hernaudez and 40 miles from Coalinga, the nearest railroad point. These claims occupy the southwestern portion of the zone of highlymetamorphosed silicified serpentine which extends from the creek justeast of Los Picachos Peak, to the old Clear Creek and Boston mines inSec. 2, T. 18 S., R. 11 E., M. D. M.
Bulletin . 12. North Star;13. Stayton. Alpine Quicksilver Mining Company (one time called the Esmer-alda Quicksilver Mining Company). H. B. Leonard, manager, SanBenito; D. McPhail, Hollister, Cal., secretary. The company owns 32full claims in Sees. 13 and 14, T. 18 S., R. 11 E., 6 miles from Hernaudez and 40 miles from Coalinga, the nearest railroad point. These claims occupy the southwestern portion of the zone of highlymetamorphosed silicified serpentine which extends from the creek justeast of Los Picachos Peak, to the old Clear Creek and Boston mines inSec. 2, T. 18 S., R. 11 E., M. D. M. They have a total length of about1^ miles along the strike of the outcrop zone and join the IMontereyGroup on the northeast. The original discovery was made by Sil-vester Tirado, who sold the early holdings to the present companyabout 1910. They have since made additional locations. The surface outcrop isochreous and highly silicified. but as one descends into the mine the Op. cit., pp. 120-131. PLATE I I Serpenline I I Mefamorph, I I Acid Igneous i I Bos/c /gneous Geological Map of Stayton from Bulletin No. 27. 3SW0 p. 96 QUICKSILVER RESOURCES. 97 serpentine shows less and less alteration. A slip at the discoverypoint strikes S. 20° E., with a dip of 70 NE. Ore so far mined hasbeen taken ont in bnnches along- the locns of this slip for an inclineddepth of 190 feet, along which the slickensided wall can be easilytraced. The width of ore at the outcrop was about two feet. No sur-face work has been done to determine the extent of mineralizationalong- the .strike. The older work was carried on through a tunnel 150feet long from which an inclined raise at an angle of about 15^ fol-lowed the mineralized fault zone 100 feet to the upper tunnel, only a few feet long. Small stopes along the raise yielded somegood ore which was treated in D retorts and pipe retorts, giving anominal output. A small stope was also driven off the lower tunneland a 15-fo
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