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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  30-Jan-2018 by George Owsiacki (GO)

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NMI 094K2 Cu1
Name LYNDA, GATAGA Mining Division Liard
BCGS Map 094K016
Status Showing NTS Map 094K02W
Latitude 058º 07' 02'' UTM 10 (NAD 83)
Longitude 124º 54' 50'' Northing 6443360
Easting 387251
Commodities Copper, Silver Deposit Types I06 : Cu+/-Ag quartz veins
Tectonic Belt Foreland Terrane Ancestral North America
Capsule Geology

The Lynda occurrence is situated at the headwaters of the Gataga River, 1.2 kilometres southeast of Sicily Mountain in the mountainous Muskwa Ranges of the Northern Rocky Mountains, approximately 148 kilometres west-southwest of Fort Nelson (Assessment Report 28734).

The occurrence is in a region known as the Muskwa Anticlinorium, a major north-northwest trending structure characterized by large folded thrust sheets which expose rocks as old as Middle Proterozoic (Helikian), as well as Paleozoic rocks (Geological Survey of Canada Map 1343A; Geological Society of America, Geology of North America, Volume G-2, page 639). All belong to Ancestral North America (Geological Survey of Canada Map 1713A). The Middle Proterozoic rocks are pre-Windermere Supergroup, and are known as the Muskwa Assemblage (Geological Society of America, Geology of North America, Volume G-2, page 111). This assemblage of carbonate and clastic rocks has been divided into seven formations. The Lynda occurrence is in the Aida Formation, a 1200 to 1800-metre thick succession of dolomitic mudstone and siltstone, dolostone, and minor mudstone, sandstone and limestone (Geological Survey of Canada Memoir 373, Paper 67-68). All rocks are gently folded, and some have slaty cleavage. Northwest to northeast striking, steeply dipping diabase and gabbro dikes are a common feature of the region.

The Lynda showing is situated in shale, shaly limestone and dolostone of the Aida Formation, which are cut by several diabase dikes (Geology, Exploration and Mining in British Columbia 1971). The strata are gently folded, striking northwest and generally dipping gently west or southwest. Most dikes strike north-northwest; some strike northeast or east. One dike, which branches into two, follows a north-trending fracture zone. The showing is centred on this zone, which contains mineralized quartz-carbonate veins, closely associated with the dike contact. The veins are a few centimetres to 1.2 metres wide, and extend for about 600 metres. The veins are mineralized with chalcopyrite and pyrite in irregular lenses and stringers, such that the grade across the veins is erratic.

In 2006, a 1-metre rock chip sample (335812) from a quartz vein with minor carbonate and local hematite stain and minor pyrite, copper bloom and malachite assayed 3.26 per cent copper and 5.13 grams per tonne silver (Assessment Report 28734).

Just over a kilometre to the northeast is another northerly trending quartz-carbonate vein, but it is thin and only weakly mineralized.

In 1971, Canadian Superior Exploration Limited conducted surface geological mapping covering the Lynda 2 and 15 claims, and 16 cubic metres of trenching on the Lynda 15 claim.

In 2006, six reconnaissance-scale rock chip samples were taken on behalf of Aries Resource Corp.

Bibliography
EMPR GEM *1971-103-106
EMPR ASS RPT *28734
GSC MEM 373
GSC P 67-68
GSC MAP 1343A; 1713A
GSA (Gabrielse, H. and Yorath, C.J. (Eds.) (1991): Geology of North America, Volume G-2)
PR REL Aries Resource Corp., Jan.18, 2006

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