-155-

to 0.5 ounce a ton and the silver up to 35 ounces a ton. The
altered wall-rock in places carries gold up to 0.13 ounce a

ton with some silver, However, the high-grade deposits are too
small and irregular to be of economic value and no zone is
indicated that might be workable as a whole.

To the east of the main workings are two or more well-
defined veins in fairly well marked fracture zones. On the
surface in places these have widths up to 23 feet, but underground
work was disappointing and suggested that they become poorer at
depth. There is abundant evidence that the zoes have been widely
but sparsely mineralized; consequently the deposits have little
merit.

Hanson's and Phemister's studies of these deposits
revealed much valuable data. The deformative movements in the
rocks took place during mineralization and continued afterwards,
and many of the fractures were open at the time of mineralization.
The mineralizing solutions carried distinctly different minerals
at different times, thus accounting for difference in the character
of mineralization from place to place. As a result the deposits
are folded, broken, and sheared to various extents.

Some intrusives were found in later work in the mine,
but it is not known whether a possible source for the mineral
deposits was disclosed. It is believed, however, that the
rhyolite dykes found in this section are meleees to the source,

which is probably nearby. The deposit resembles somewhat the one

at Bob creek.

Babine Lake

North of Topley, district on Babine lake, Mesozoic
rocks are again exposed. On McDonald island (Richmond and

Robin Hog a medium-grained diorite and quartz diorite porphyry

[ene
it
— Ann, Repts. Minister of Mines, B.C., NOZO pe USO LIZ pete

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