The Flathead 8 (B Grid) showing is located on a ridge separating Howell Creek and the Flathead River, approximately 54 kilometres southeast of Fernie.
The showing area is underlain by a thick series of limestones, dolomites and black shales of Mississippian Rundle Group (Livingstone, Mount Head and Etherington formations), Mississippian Banff and Exshaw Formation and the Upper Devonian Palliser Formation. Quartz arenites and dolomitic sandstones of the Permo-Pennsylvanian Rocky Mountain Group also occur. Numerous small Cretaceous stocks of syenite and trachyte composition have intruded and locally altered the enclosing sedimentary strata.
A 1500-metre length along a grid contained a coincident gold-in-soil geochemical, chargeability and resistivity low anomaly. Of 6 holes drilled in 1989, FB-1, FB-2, FB-3, FB-5 mainly intersected limestone throughout with some disseminated pyrite. FB-2 contained a 5.6-metre-thick intermediate dike with disseminated magnetite and rare pyrite. FB-3 also contained 8.9 and 11.6 metres of green shale. FB-4 contained 142 metres of mostly shale, siltstone, and quartzite before ending up ending up in limestone containing 10 metres of intermediate dike to end of hole at 163.7 metres. FB-6 drilled into a tan breccia unit for 61.5 metres consisting of siltstone, limestone, and quartzite in a sandy matrix. The remainder of the hole to 151.5 metres was limestone.
Outcrop exposures within the soil anomaly were reported to be poor with only some isolated occurrences of limestone and rare syenite. Three grab samples were collected in 1988 from the anomalous area, one of which consisted of limestone breccia with malachite that assayed 0.29 gram per tonne gold (Assessment Report 18091).
In 2009, Max Resources reported that in 2003 Goldrea Resources Corp. completed four diamond drill holes on the "K" and "B" zones totaling 476 metres. Results included one drill hole (03-04) on the B zone with a 3.3-metre intersection (at the end of the hole) that graded 240 grams per tonne silver (Assessment Report 31338).
WORK HISTORY
In 1988, Placer Dome Inc. conducted a geochemical, geophysical, and backhoe trenching program on the Grid B target area on parts of the Flathead 6,8 and 12 (Assessment Report 18091). Work included the collection of 62 soil samples, 3 rock grab samples, 77 rock chip samples from trenches, and 7.8 kilometres of induced polarization surveying. A coincident gold-in-soil geochemical, chargeability and resistivity low anomaly extends for over 1500 metres on the grid. A bedrock source was not identified.
In 1989, work completed on behalf of Placer Dome Inc. was concentrated on the Grid B area located on the Flathead 6, 8 and 12 claims (Assessment Report 19455). Work consisted of six NQ drill holes designated FB-1 to FB-6 and totaled 886.5 metres. The drill target was the 1988 coincident gold-in-soil geochemical, chargeability high and resistivity low anomaly extending over 1500 metres. Disseminated pyrite in a wide fault zone may be the cause of the weak IP anomaly identified in 1988, but the gold source has still not been identified. All six holes failed to intersect rock with any significant gold tenor, leaving the source of the strong geochemical gold soil anomaly unknown.
Outcrop exposures within the soil anomaly were reported to be poor with only some isolated occurrences of limestone and rare syenite. Three grab samples were collected from within the soil anomaly, one of which consisted of limestone breccia with malachite that assayed 0.29 gram per tonne gold (Assessment Report 18091).
Refer to Flathead 6 (082GSE070) for related geological and a more detailed work history.