The region in which the showing occurs is within the Intermontane Belt, underlain dominantly by Lower to Middle Jurassic volcanic and sedimentary rocks of the Nechako Formatin, Hazelton Group consisting of the Nechako and Naglico formations. These assemblages are overlain by the Upper Cretaceous to Lower Tertiary Ootsa Lake Group and Miocene plateau basalt. Intruding the Hazelton Group is belt of granodiorite, diorite and quartz diorite plutons of the Late Cretaceous Chelaslie River-Tetachuck Lake Plutonic Suite and Eocene feldspar porphyry.

The Chelaslie Arm showing comprises molybdenite in a small quartz vein cutting granitic rocks of probable Cretaceous age which has intruded Lower Jurassic Hazelton Group volcanics.

Work History

The Geological Survey of Canada noted the occurrence in a small quartz vein about 2 miles north of the west end of Chelaslie Lake (Geological Survey Memoir 324, page 54).

In 2007, a helicopter-borne geophysical survey was carried out on behalf of Golden Dragon Explorations Inc. on the South Claims project (Assessment Report 29485). The survey extended along the northeast side of Chelaslie Arm from Euchu Lake (Reach) northwest to end of Chelaslie Arm and about 8 kilometres north from the northwest end of the arm. The length of the area survey from northwest to southeast was about 27 kilometers and from 5 to 6 kilometres across from northeast to southwest. The survey covered MINFILE showings Bull 4 (093F 063) at the southeast end of the survey, the MT (093F 031) in the central part of the survey and the Chelaslie Arm (093F 025) towards the northwest end of the survey. The northwestern part of grid is reported to be very active in terms of electromagnetic anomalies; the central part is subdued in electromagnetic activity; and fewer anomalies exist in the southeastern area. Magnetic anomalies are due to either magnetic intrusions or magnetic rich volcanics except in the southeast portion where there are more linear trends, possibly reflecting diking or magnetic and non-magnetic flows.

In 2008, A 76.1 kilometre 3-D IP/Resistivity survey was carried out on behalf of 808718 (BC) Ltd. on its Nechako (Ootsa Lake) property project (Assessment Report 30527). This survey was completed about 1.5 to 3 kilometres to the northwest of the plotted location of the Chelaslie Arm MINFILE showing which is given a location certainty of being within 1 kilometre of the actual plot location. The results of the 2007 helicopter-borne AeroTEM EM and magnetic surveys revealed that the 3D IP/Resistivity survey area is “very active in terms of electromagnetic anomalies”. Relatively high resistivity features on the 2008 grid are roughly grouped into two zones.