102

Outsider Group (Locality 202)

References: Annual Report of the Minister of Mines, British Columbia, 1906, 1918, 1919,
1921, 1922, 1923, 1925, and 1926; Geol. Surv., Canada, Sum. Rept. 1922, pt. A.

The Outsider group adjoins and lies north of the Maple Bay groups
at Maple bay, Portland canal. The property was bonded in 1905 to the
Brown Alaska Smelting Company who in 1906 did considerable develop-
ment work. The company produced about 500,000 pounds of copper from
the property in 1906 and 1907. The property was then acquired by Spokane
interests who developed the deposit to deeper levels. In 1922 the property
was acquired on a royalty basis by the Granby Consolidated Mining, Smelt-
ing, and Power Company and was mined until 1926, producing a total of
96,000 tons of ore yielding 3,400,000 pounds of copper, 65 ounces of gold,
and 4,600 ounces of silver.

The country rock on the group consists of amphibolite holding bands of
sediments and volcanic rocks. The mineral deposit is a chalcopyrite-bearing
quartz vein striking north-northeast and dipping steeply east. The vein is
2 to 12 feet wide and is splashed here and there with chalcopyrite as are
the other veins in the vicinity of Maple bay. Though not as large as some
of the veins on the Maple Bay groups this vein is more strongly mineralized
with chalcopyrite and also apparently carries higher values in gold. The
ore contains chalcopyrite and pyrrhotite but practically no pyrite or other
sulphide. The vein has been traced for 3,000 feet between elevations of
906 and 2,000 feet above sea-level. On the foot-wall side a band of cherty
argillite several feet thick is in contact with the vein for most of its known
length and depth. Beyond the band of cherty argillite is a band about
50 feet thick of argillite. The hanging-wall of the vein is amphibolite. A
dyke follows the northern half of the vein.

The vein has been developed on seven levels. The lowest level, at an
elevation of 800 feet, was run from a winze below the 900-foot level. Three
other main levels are adits at elevations of 1,070, 1,160, and 1,295 feet
respectively. The ore-body has a known vertical depth of 500 feet. The
vein has been explored underground for a length of 2,000 feet.

Pedro Group (Locality 114)
References: Annual Report of the Minister of Mines, British Columbia, 1928 and 1931.

~ .

The Pedro group of claims is east of Georgia river 5 miles from its
mouth. The country rocks are mainly voleanic rocks intruded by granitic
dykes. A narrow quartz vein sparsely mineralized with galena has been
followed by an adit for 150 feet. At another place a quartz vein up to
4 feet wide is partly developed by two adits. This vein is sparsely mineral-
ized and has apparently been cut off by a northerly striking fault. Near
these two adits another showing outcrops on the canyon wall on the east
side of Georgia river. At this place mineralization is noticeable along the
cliff for a distance of 40 feet, but the strike of the mineralized body is not
known. The minerals present are chalcopyrite, pyrrhotite, arsenopyrite,
and sphalerite. Narrow bands of massive sulphides occur locally in the
outcrop.