The LG Extension occurrence is located at an elevation of approximately 1250 metres on a northeast-facing slope, south of Nelson Creek and approximately 8.5 kilometres southwest of the southwest end of Meziadin Lake.
The area is underlain by north-striking(?) Lower Jurassic Betty Creek Formation(?) rocks (Hazelton Group; Bulletin 63). These rocks comprise predominantly plagioclase porphyry andesites that are interbedded with intermediate tuffs and volcaniclastics. Argillite, sandstone and siltstone form thin bands in the volcanics. Northwest-trending, northeast-dipping plagioclase and hornblende porphyritic dikes of the Portland Canal dike swarm intrude all rock types, especially in the area north of the Del Norte Glacier. Northeast–, north to north-northwest– and east-northeast–trending faults have been reported in the area.
Locally, a 10-centimetre-wide quartz vein, striking 300 degrees and dipping subvertically, hosts minor galena mineralization. The vein is thought to possibly relate to the northward extension of the LG (MINFILE 104A 161) vein occurrence to the south.
In 2004, a grab sample (A04-154) assayed 186.2 grams per tonne gold, 1002.1 grams per tonne silver and 0.65 per cent lead (Mastalerz, K., Walus, A. [2020-03-31]: National Instrument 43-101 F-1 Technical Report on Del Norte Property).
Work History
The area has been explored in conjunction with the nearby LG (MINFILE 104A 161) occurrence a complete regional exploration history can be found there.