The Rox Northwest occurrence is located at an elevation of approximately 1490 metres on a north- trending ridge between Skwim Mountain and The Boot, approximately 4 kilometres northwest of Mount Diadem.
The area lies within the Jurassic to Cretaceous Coast Plutonic Complex near its western boundary with the Insular Belt. The complex consists of diorites and granodiorites enclosing a series of northwest-trending pendants. In the Mount Diadem area, feldspar-rich diorite and quartz diorite dominate. These pendants, occurring along Howe Sound and Jervis Inlet, are interpreted to be part of the Lower to Middle Jurassic Bowen Island Group, coeval with volcanic rock of the Bonanza Group and the Harrison Lake Formation.
Mount Diadem forms part of a ridge consisting of Bowen Island Group sediments and volcanics that form a roof pendant 15 kilometres long by 1 to 2 kilometres wide. Lithologies along the eastern portion of the pendant consist of dark-green, chlorite-rich, massive volcanic flows and tuffs intercalated with grey to black cherty tuff and foliated, pyritic argillaceous siltstone. The western portion of the pendant contains well-bedded clastic sediments and minor carbonate with intercalations of intermediate to mafic tuffs, flows and sills. In all, six stratigraphic units have been defined and are, in ascending order: 1) tuffaceous sandstone, minor argillite and lapilli tuff; 2) chlorite-rich tuff with interbedded tuffaceous sandstone, minor argillite; 3) thin-bedded argillite, minor carbonate and lapilli tuff interbeds; 4) banded argillite, sandstone, chert, minor lapilli tuff; 5) siliceous argillite, siltstone, tuff, chert and 6) andesitic breccia.
Volcanics and sediments have a near-vertical bedding and cleavage that form a series of tight upright folds that plunge moderately to the north.
Locally, a chloritic crystal tuff hosts coarse-grained chalcopyrite along with pyrite and sphalerite. The host tuff unit strikes 110 degrees with a dip of 87 degrees east.
In 2017, a chip sample (17R-4) assayed 1.25 per cent copper, 4.4 grams per tonne silver and 0.11 gram per tonne gold over 0.18 metre (Assessment Report 36594).
Work History
The area has been explored in conjunction with the nearby Rox (MINFILE 092K 083) occurrence since the 1920s, and a complete exploration history up to the discovery of the occurrence in 2017 can be found there.
During 2017 through 2019, Asia New Energy Corp. conducted minor programs of geological mapping and geochemical (rock and soil) sampling and a 3.9 line-kilometre ground magnetic survey on the area as the Rox property.
In 2023, Kenorland Minerals North America Ltd. completed a 512.0 line-kilometre airborne electromagnetic survey on the Rox property.