The workings around the old Foster vein are shown in Fig. 6. The rocks exposed
are for the most part interbedded dark-grey argillaceous quartzite and argillaceous
schist, and light-grey quartzite in beds 1 to 6 inches in thickness. They strike about
north and dip 22 to 28 degrees east.

On the west side of Oregon Gulch between elevations 5,560 and 5,570 feet two
open-cuts expose two narrow parallel quartz veins 12 feet apart striking about north 10
degrees east and dipping 70 degrees westward. The westerly vein is exposed for a
length of about 40 feet and the easterly for about 20 feet. Visible gold is said to have
been found in the outcrop of these veins. About 260 feet south of these surface expos-
ures and at elevation 4,500 feet, an adit was driven in a direction north 8 degrees west
for 217 feet. From there a crosscut to the north-west crossed four narrow veins all
striking about north 10 degrees east and dipping about 70 degrees west. The wider
two of these veins, from 2 to 8 inches wide and mineralized with pyrite, galena, and
sphalerite, were followed by a drift for 35 feet to the north. The veins evidently are
the downward extension of the two veins exposed on the surface and are on the foot-wall
side of a normal fault which crosses the adit from 135 to .165 feet from the portal and
which (see section on Fig. 6) displaces the veins possibly 20 feet or more.

Two samples (91F and 92F) were taken from the vein in the adit, and three samples
(19F, 20F, and 21F) of well-mineralized quartz were selected from the dump. The
results are given in Table VIII. The gold content of all these is low. Evidently the
high assays obtained in the early days were from surface samples that contained some
free gold. No free gold was seen, though some is reported to be present in the vein.

Table VIJI.—Tabulation of Assays of Samples from Foster Ledge Gold Mines, Limited.
(Sample locations are shown on Figs. 5 and 6.)

Sample No. and Location. i Description. | Gold. | Silver.

Oz. per Ton. | Oz. per Ton.

19¥. Foster Ledge adit dump.......... Selected high pyrite mineralization........0.....2220...22:00:00-+ 0.06 0.4
*20F. Foster Ledge adit dump......... Selected=ealenasmineralizatione 1 eee 0.02 1.0
721F. Foster Ledge adit dump......... Selected sphalerite mineralization. ...........02.0.......2-----2---22-+ 0.01 Nil

50m Orecont Gulch. meet. =e 15-inch formational quartz vein—no sulphides............... 0.01 Nil

60F. Oregon Gulch..............222.....------ 12-inch formational quartz vein—small amount galena
Varah oN WAV ADRK Olea ea ee ee eae re Bere ee: cee 0.01 Nil
91r. Foster Ledge adit..................... 7-inch quartz vein with pyrite, galena, and sphalerite 0.16 Nil

92r. Foster Ledge adit..................... Selected high sphalerite with some galena and pyrite 0.07 0.7

93r. Foster Ledge lower adit.......... Composite sample along 1- to 3-inch vein with no ap-

TODS E: TAUNTED VAAN O aos ces ce scence oes ooo eee concoeeee Nil Ni
130Fr. Galena vein on Lot 1664.......... Selected solidsg all eniaaet ak Wes er ee ee et eet See SNe ee Trace 31.6
131lF. Galena vein on Lot 1664......... Selected leached and oxidized quartz..........................-2----- 0.02 Trace

* Contains 4.9 per cent. lead.
+ Contains 2.5 per cent. zine.

The old Foster shaft, reported depth 56 feet, is on the east side of Oregon Gulch,
100 feet from the surface stripping on the veins. It is reported* “to have been sunk
on two 5-foot veins 4 feet apart.’”” This is probably erroneous because the shaft is only
5 by 7 feet and no vein-quartz is to be seen on the dump. Any veins, judging from the
others on the claims, are more apt to have been about 5 inches wide. The shaft is now
caved and filled with water, and no veins are to be seen.

Three open-cuts were put down through about 4 feet of overburden in the south-
west corner of Lot 1664 on the ridge between Oregon Gulch and Davis Creek and about
600 feet west of the Last Chance-Nelson Creek fault. One cut is on the south boundary
of Lot 1664 about 160 feet from the south-west corner; the other two lie to the north-
east. The cuts are now sloughed and no vein can be seen. However, quartz fragments
on the dump indicate that a vein was found and that, in the central cut, it was mineral-

* Geol. Surv., Canada, Sum. Rept., 1933, Pt. A, p. 42.

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