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File Created: 02-Apr-2012 by Nicole Barlow (NB)
Last Edit:  17-Apr-2012 by Nicole Barlow (NB)

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NMI
Name MR, MR 1-9, PLAT, LILLOOET RIVER DELTA PLACER Mining Division New Westminster
BCGS Map 092G079, 092G080
Status Showing NTS Map 092G16E
Latitude 049º 45' 11'' UTM 10 (NAD 83)
Longitude 122º 10' 37'' Northing 5511500
Easting 559287
Commodities Gold Deposit Types C01 : Surficial placers
Tectonic Belt Coast Crystalline Terrane Gambier
Capsule Geology

lacer claims are located along the final few kilometres stretch of the Lillooet River before it enters Harrison Lake, in the Port Douglas area.

The area is underlain by Early Cretaceous Fire Lake group volcanic-sedimentary rocks surrounded by Coast Plutonic Intrusions, dominantly of granodiorite composition.

Locally, alluvial deposits related to the development of the Lillooet River delta primarily underlie the claims. These post- Pleistocene sands contain gold and platinum in submicron- sized particles.

The present relief of the Lillooet River drainage system was shaped during various stages of glaciation. At least three major periods of glaciation are recognized. Glaciers formed large ice sheets, which covered the area. Upon melting, these glaciers cut deep, narrow canyons and valleys in the mountains and transported large volumes of gravel from the surrounding mountains, resulting in large amounts of gravel deposited on the bedrock platform of the Lillooet River valley.

Most of the gravels in the area appear to have originated in the immediate vicinity. The gravels consist mainly of granodiorite and quartz diorite. There are clay and silt layers intercalated between cobble and boulder beds.

The main delta of Lillooet River is composed of material ranging from mud to cobbles of about 20 to 30 centimeters in diameter. There are few large boulders. The lakeside beaches show stratified layers of very fine black sand containing chromite and tellurides. Gold recovered in this area was very fine with particles of about 0.355 millimeters. Values of platinum, silver, palladium, rhodium and osmium are reported in the sand of the delta (Assessment Report 27668).

In 2004, two samples by Platinate Minerals and Industries Ltd. returned slightly anomalous gold values from sand samples CS-03 and LS-04, which assayed 0.05 gram per tonne gold and 0.04 gram per tonne gold, respectively (Assessment Report 27668).

Bibliography
EMPR ASS RPT 27668
PF (Thomson, D.S. (1968-04-06): Property submission: Zyrox Mining)

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