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Ministry of Energy Mines and Responsible for Core Review

103H

 

NTS 103H location map (click for index map).

Douglas Channel
NTS 103H

103I

103G

093E

093D & 103A

 

Researched and compiled by: L.D. Jones, L.L. Duffett, J.M. Riddell

Release date: April 1989; Southeast part updated October 1999

 

View NTS 103H in MapPlace

103H Map
Geological Legend
Master & Production Report
General Property File
ARIS Map 103H


The Douglas Channel map area lies within the Coast belt and contains 77 recorded mineral occurrences.
The belt consists intermediate granitic rocks of the Coast Plutonic Complex, migmatite and metamorphic rocks of the central gneiss complex in the northeast part of the map, and discontinuous synformal zones of metasedimentary and metavolcanic schist between plutons or within the central gneiss complex.

 

The types of occurrences in the area consist of gold-bearing pyritized quartz veins; sulphide replacements of skarn or schist with copper and gold; limestone,  marble and dimension stone; garnet and kyanite; silica; mica; and thermal springs. The Surf Inlet and Pugsley mines (103H 027), which produced 12 million grams of gold between 1902 and 1943, are currently being evaluated underground rehabilitation and drilling. Here, several shear zones contain auriferous quartz veins within dioritic gneiss. The Ecstall deposit (103H011) and a cluster of thirteen other showings, including the Packsack prospect (103H 013), occur within the Scotia-Quaal metamorphic belt, a ?Proterozoic-Paleozoic metasedimentary and metavolcanic sequence that includes the Middle Devonian Big Falls orthogneiss, Early Jurassic orthogneiss, and Jurassic or Cretaceous mafic and utramafic rocks. The showings occur in hydrothermally altered  volcanic-volcaniclastic rocks, close to a felsic volcanic centre. At the Ecstall deposit, two massive pyrite lenses contain 6,349,700 tonnes of 0.6 per cent copper, 2.5 per cent zinc, 42.3 per cent iron, 48.4 per cent sulphur, 20.0 grams per tonne silver and 0.5 gram per tonne gold.

 

REFERENCES:

Gareau, S.A. (1991): The Scotia-Quaal metamorphic belt: a distinct assemblage with pre-early Late Cretaceous deformational and metamorphic history, Coast Plutonic Complex, British Columbia; Canadian Journal of Earth Sciences, Vol 28, pages 870-880.

 

BC Geological Survey Publications for NTS 103H