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cut in this particular place may be due to a syncline, or a
syneline and anticline, which plunge toward the northeast parallel
to the valley. To the southwest of the deposits there are reverse
dips of the strata indicating the possibility of a local domal
structure. Owing to the extensive erosion of the Skeena formation,
which alone gives a clue to the structure, only remants of such
structures are visible along the valley walls.

Most of the deposits and all that appear to be important
or that have been developed lie in the volcanics within a very
short distance of the contact with the sediments. The sediments
have been only slightly mineralized. On the south side of the
gulch where the contact is fairly well defined a zone of rusty
rock a few hundred feet thick lies below the contact, whereas
above and farther below it there is notably less rustiness. On
the north side below what would be the position of the contact
projected there is intense rustiness, which dies out downward, :
and much mineralization is reported. The rusty mineralized zone
appears to be definitely related to the contact, but the geology
is not clear. .The wall is very steep and largely inaccessible,
but can be seen from the south side. Large areas of the valley :
floor are scoured clean by the glacier and by water from it, yet 4
there is comparatively little rustiness or evidence of its having a
been mineralized; only one small deposit is reported and it occurs
on the crest of a steep cliff, which is the part that was probably
nearest the contact.

Apart from the tetradymite-gold deposit, which is
considered to be a distinct type, there is great variety in the
metal content of the deposits, including lead-zinc, silver-lead-
zinc, silver-gold-lead-zine, copper, high-grade silver-copper,

and some largely of iron sulphides. The different varieties are

in different deposits and these do not grade into one another.