. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. winze 200 feet deep in north drift. Idle. Mrs. Julia Sargent, ofJackson, owner. Seaton Mine (quartz). It is 1 mile east of Drytown. The vein isdistinguished hy a ma.«sive outcrop of quartz, occurring on the contactbetween the Mariposa slates on the west and diabase on the east. Thereis a shaft sunk on the vein to a depth of 950 feet, on an angle of 65°.Idle. A. Hay ward Estate, of San Francisco, owner. Shenandoah (Easton) Mine (quartz). It is 1^ miles northeast ofPlymouth. A
. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. winze 200 feet deep in north drift. Idle. Mrs. Julia Sargent, ofJackson, owner. Seaton Mine (quartz). It is 1 mile east of Drytown. The vein isdistinguished hy a ma.«sive outcrop of quartz, occurring on the contactbetween the Mariposa slates on the west and diabase on the east. Thereis a shaft sunk on the vein to a depth of 950 feet, on an angle of 65°.Idle. A. Hay ward Estate, of San Francisco, owner. Shenandoah (Easton) Mine (quartz). It is 1^ miles northeast ofPlymouth. A shaft was sunk on the vein to a depth of 1200 feet onangle of 58°. No pay ore was developed. Mrs. Hilda Brow^n, of NewYork City, owner. So^ith Eureka Mine (quartz). See our Reports X, p. 113 ; XI, p. 144;XII, p. 79: Bulletin 18, pp. 63, 64. This mine is 1 mile south of SutterCreek, adjoining the Oneida on the north. The slates are capped witha Neocene andesite about 25 feet in thickness, so there are no croppingsof the vein where the shaft was sunk. The vein is a northern exten- 46 MINES AND MINERAL AMADOR COUNTY. 47 sion of the Kennedy, Argonaut, and Oneida lead. The north shaft isdown 2785 feet on a 67° incline. There are two hoisting compartments5x4 and a manway 5x2 in the clear. The south shaft is 880 feetsoutheast of main shaft, and has a vertical depth of 600 feet. Threeveins have been developed, namely: hanging-wall, footwall, and middle,which occur in the black slates and greenstone schists. Numerous lensesof greenstone are encountered in the slates, which fault the vein. Thenorth shaft intersects the hanging-wall vein at 1700-foot level, fromwhich i)oint the shaft was sunk on the vein 1o th( 200()-fo()t levpl, tin*remaining distance being in the footwall of the vein. At a point belowthe 2000-foot level, the middle and footwall veins form one ore of the pa}^ ore developed on lower levels is found on the latter ore shoots have a trend t
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