56" ALASKAN MINERAL RESOURCES IN 1904. [bull. 259. 
This will eventually undercut the ore bodies at a depth of 300 feet. 
Other developments on this property include several open cuts and 
small pits, exposing the mineralized rock at various points along the 
surface. 
On the west side of Seymour Canal, 4 miles north of Windfall Harbor, 
a deposit of copper and iron sulphides is exposed in a quartz-sericite- 
schist of sedimentary origin. These sulphides have been introduced 
with stringers of quartz along the strike of the schist and form a min- 
eral zone 20 feet in width. The deposit is located close to the water's 
edge and has been prospected by a 50-foot shaft and a drift crosscutting 
the ore body. The low percentage of copper and small gold values in 
the ore have not encouraged further developments. 
At Gambier Iki/v, south of the entrance to Seymour Canal, chalcopy- 
rite occurs with other sulphides in irregular quartz veins and string- 
ers, which follow the general trend of a calc slate country rock. These 
deposits are located on the north slope of Cave Mountain at the head 
of Gambier Bay and on the northeast slope of Mount Gambier. None 
of the properties have received much attention, most of them even 
lacking assessment work. 
( bal. — The existence of coal beds at Murder Cove, just east of Point 
Gardner, and in Kootznahoo Inlet north of Killisnoo, has been known 
for many years, and early, though unsuccessful, attempts were made 
by the Navy Department to locate workable deposits on this island. 
Later in the nineties private prospecting was undertaken by many 
persons, with the idea that the narrow coal seams exposed would become 
wider in depth or that the small beds indicated more extensive deposits 
below. 
In Kootznahoo Inlet coal is widely distributed in the sandstone con- 
glomerate beds of Eocene age. These beds are but slightly folded and 
faulted. The coal seams average from a few inches to a few feet in 
width, and many thousands of dollars have been spent in their devel- 
opment without revealing minable deposits. Most of the properties 
have been abandoned, and no work was in progress during the last 
summer. 
At Murder Cove only one coal seam has received attention. This is 
located 2 miles from the head of the cove at an elevation of 500 feet. 
The inclosing beds are composed of basaltic tuff, breccia, and lava which 
show much surface decomposition. This occurrence resembles that of 
the Yukon coal beds." The absence of fossils and the alteration of 
these beds have been caused in part by the overlying lava flows, 
which, however, have made the coal much harder and of a better 
quality. Both the coal beds and rocks in which they occur have 
been folded sufficiently to render the profitable extraction of the coal 
a difficult problem. The coal lies in three seams, separated by thin 
a Collier, A. J., Coal resources of the Yukon, Alaska: Bull. U. S. Geol. Survey No. 218, p. 18. 
