106

| LILLOOET MINING DIVISION
| (28) Lillooet Lake and Northwest
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}

Source of Information. Cairnes, C. E.: ‘‘Pemberton Area, Lillooet District, British Columbia”’;
Geol. Surv., Canada, Sum. Rept. 1924, pt. A, pp. 76-99.

i GENERAL DESCRIPTION

I :

| A wide band of highly deformed Triassic sediments and voleanics
} extends northwest from the head of Lillooet lake. Bodies of Jurassic or
i]

Cretaceous granodiorite, quartz diorite, ete., occur within the area of
Triassic strata and border them on both sides of the band-like area. The
granitic rocks are a part of the Coast Range batholithic area. In various
places the strata have been mineralized. ‘The common type of ore miner-
alization . . . . is the . . . . replacement of limestone by
H) 4 . . magnetite, hematite, pyrrhotite, pyrite, sphalerite, chaleopy-
HH
|

rite . . . . (ete.) These mineral deposits occur near some in-

trusive body regarded as having affected the metamorphism and miner-
alization of the limestone.” ,

He No mineral deposit yet found in the district appears to be large enough
and pure enough to be classed as an iron ore deposit, but the type of miner-
alization is sufficiently like that found to the west along the British Colum-
bia coast to suggest that large, comparatively pure bodies of magnetite
may yet be discovered.

CLINTON MINING DIVISION

(29) Taseko River Area
LOCALITY AND HISTORY

Deposits of limonite, said to have been staked first in 1909, occur

in the country drained by the headwaters of Taseko (Whitewater) river

| and in adjacent districts. The deposits in Taseko valley have been exhaus-

| tively reported upon by J. D. MacKenzie in the article referred to below
| and the summary account here given is derived from this report.

The deposits lie about 65 miles west-northwest of Lillooet. The
best route to the district is by road from Shalath on the Pacific Great
Eastern railway, to and up Bridge River valley for nearly 40 miles to
where a trail following Gun creek leaves the wagon road. The Gun
Creek trail in a distance of 40 miles reaches the head of the creek valley,
crosses Taylor pass, and enters Taseko valley. The limonite deposits
occur in the upper part of Taseko and in the valleys of several tributaries
within an area of about 50 square miles.

' The deposits have been referred to in the following reports:

Bateman, A. M.: ‘Exploration between Lillooet and Chilko Lake, British Columbia’; Geol.
Surv., Canada, Sum. Rept. 1912, pp. 186-7.

Lindeman, E., and Bolton, L. L.;: ‘‘Iron Ore Occurrences in Canada’’; Mines Branch, Dept. of
Mines, Canada, vol. 2, 1917, pp. 22-23. Referred to in part as the Chilcotin hematite
mines. The account is derived from the report by Bateman and information supplied by
an owner.

Brewer, W. M.: ‘‘Taseko Valley [ron-ore Deposits’; Ann. Rept., Minister of Mines, B.C.,
1919, pp. 241-251. Contains detailed descriptions of the various bodies of limonite and
estimates of the available tonnage of ore.

Crossland, I. J ‘Taseko Valley Iron-ore Deposits’; Ann. Rept., Minister of Mines, B.C.,
1920, pp. 175-186. Contains detailed descriptions of the various bodies of limonite and
estimates of the available tonnage of ore.

MacKenzie, J. D.: ‘The Limonite Deposits in Taseko Valley, British Columbia’’; Geol. Surv.,

Canada, Sum. Rept. 1920, pt. A, pp. 42-70. A full account of the various bodies of lim>nite
with estimates of available tonnage and accompanied by plans of the individual deposits.