The Eagle 1 copper occurrence (not to be confused with the Eagle Mine 50 kilometres to the north-northwest) is situated on a tributary of the Gataga River in its headwaters, 14 kilometres south of Churchill Peak in the mountainous Muskwa Ranges of the Northern Rocky Mountains (Property File - Report on the Eagle 1 property, 1972).

The occurrence is in a region known as the Muskwa Anticlinorium, a major north-northwest–trending structure characterized by large, folded thrust sheets that 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, a thick package of carbonate and clastic rocks that has been divided into a number of formations (Geological Society of America, Geology of North America, Volume G-2, page 111).

Available information on the geology of the Eagle 1 occurrence is limited. From its location, the property apparently straddles an east-northeast–verging thrust contact that places dolomitic mudstone and siltstone of the Aida Formation of the Muskwa Assemblage onto conglomerate, sandstone, shale and limestone of the Cambrian Atan Group (Geological Survey of Canada Map 1343A, Memoir 373, Paper 67-68). The area is intruded by generally north-northwest–trending, steeply-dipping gabbroic dikes.

The Eagle property, encompassing the Eagle, Rob, Rory and Cat claims, is located on two parallel, veined and mineralized fault zones, each approximately 1.6 kilometres long and approximately 1.5 kilometres apart. Each fault zone contains a system of quartz-carbonate veins, generally aligned along the contacts of north-trending gabbroic dikes intruding Proterozoic argillaceous rocks. The more important is the Number 1 vein system, which is approximately 1.5 metres wide and has several branching quartz veins. Chalcopyrite and minor galena are erratically distributed in the main vein over a strike length of 260 metres, and to a lesser degree in the branching veins.

Mineralization is strongest in the north of this vein system, from which grab samples have returned assays ranging from 0.45 to 11.2 per cent copper (Property File - Report on the Eagle 1 property, 1972). The other vein system has only minor, sub-economic copper mineralization.

Work History

In 1972, Bearcat Explorations Ltd. examined and sampled the area as the Eagle, Rob, Rory and Cat claims.

In 2005, Twenty-Seven Capital Corp. completed a regionally extensive program of geochemical (rock, silt and soil) sampling and a 9002.0 line-kilometre airborne magnetic survey on the area as the Muskwa property.