The Nimble showing is located at the headwaters of Penny Creek, about 12 kilometres east of Observatory Inlet. The area has been intermittently explored in the past for molybdenum.

The showing is situated in the Tertiary Coast Plutonic Complex near the eastern margin where it contacts Middle Jurassic to Upper Cretaceous Bowser Lake Group sediments.

Molybdenum mineralization is hosted in a 2 by 1 kilometre body of fine to medium grained biotite trondhjemite granite of the Oligocene Alice Arm Intrusions. The trondhjemite intrudes Eocene, coarse grained, equigranular biotite granodiorite of the Coast Plutonic Complex and has been dated at 36 million years (Carter, N.C., 1978). It is crosscut by lamprophyre dikes.

Mineralization consists of clots and smears of molybdenite and minor pyrite in quartz veins, fractures and quartz-healed fractures. These occur in the trondhjemite over a 700 metre distance along an east trending cliff on the north side of Penny Creek. Fractures are near vertical and strike 140 to 160 degrees and 065 to 080 degrees. Mineralized quartz veins, 5 to 10 millimetres wide, strike north and dip near horizontal. The veins are most intensely developed within 50 metres of the glacier west of Penny Creek. Molybdenite-bearing quartz veins are also frequently developed in a zone of potassic alteration, 160 to 260 metres west of the glacier, within the 700 metre wide zone. Seven grab samples taken from quartz veins assayed between 0.016 to 0.26 per cent molybdenum (Assessment Report 9930).

In 1979, the Mount Huntingdon property consisted of the Nass 1-4 and the BC 7-12 claims. The Nass claims were optioned by Bethlehem Copper Corporation as an acquisition of the Molybdenum Belt Joint Venture. The BC claims were staked following prospecting in 1979 and 1980. Previous work in the area is limited. Record of Amax working in the area was reported by the B.C. Ministry of Mines, but no assessment was filed. The prospect was described briefly as the Penny Creek deposit by N.C. Carter in the Molybdenum Encyclopedia, Volume II and age dated as 36 million years. Detailed geological mapping and geochemical rock chip sampling along the north face of the Stagoo Creek Canyon was undertaken in 1981.