==

What little information is available about the western
section of the Coast Range belt suggests that away from the coast
the area is largely underlain by granitic rocks. In the narrow
strip along the railway, examined by McConnell, Dolmage, and
Hanson, the rocks are largely quartz diorite aus granodiorite
which judging by the absence of discoveries in them are mainly
unfavourable for the occurrence of mineral deposits. It may be,
however, that within them in places there are massos of older
granitic rocks. Such masses, together with masses of non-intrusives
such as have been observed near the railway, are favourable for ore
deposition.

The fringe of older rocks flanking Kitsumgallum valley
would appear to be favourable for the occurrence of ore deposits,
but up to the present this area seems to have received little
attention although some mineral deposits have been discovered.

On the Martin group narrow, mixed sulphide veins carry up to 0.4

ounce in gold and 4 ounces in silver,+ but underground work yielded

——-- ro Se aa

1 ann. Rept. Minister of Mines, B.C., 1928, p.7l.

i

discouraging results. On the Mayou group quartz veins carry in
places small amounts of galena and assay up to 0.2 ounce in gold

: . 2
and 9 ounces in silver.— On the Autwm group there are numerous

& Ann. Rept. Minister of Mines, B.C., 1928, p71.

ee ca

showings of pyrite-magnetite-chalcopyrite replacement deposits in
limestone and andesite carrying in the main only moderate values

in copper «— The original showings collectively seemed to indicate

5 Hanson, Ge: Geol. Surv., Canada, Sum. Rept. 1925, pt-A, p.llé.
Ann. Rept. Minister of Mines, BeGesn LS2Ses Pel Or

Le

or a

possibilities of good-sized bodies of milling ore being present,

but some development work, especially underground, failed to yield

7 ee