The Nevermore prospect lies in the Blue Ridge area, 500 metres northwest of the Voyaguere occurrence (082KSW048) and some 17 kilometres northwest of Kaslo, British Columbia.
Silver-lead-zinc mineralization occurs in the Triassic Slocan Group, locally consisting primarily of black fissile phyllites with interbedded limestone, calcareous phyllites and brown gritty quartzites. The general structural trend is 310 degrees, dipping generally southwesterly. Greenstones and ultramafic rocks of the Permian Kaslo Group unconformably underlie the Slocan Group to the east, also hosting silver-lead-zinc mineralization. Satellite stocks, dikes and sills are generally correlative with the Nelson batholith to the immediate south. Late stage lamprophyre dikes are also common.
This prospect lies immediately adjacent to the contact between lithologies of the Kaslo Group volcanics and unconformably overlying Slocan Group metasediments. At this prospect, the Kaslo Group consists of greenstone, mainly andesite, serpentinite, dacite and gabbro. Slocan Group lithologies in the immediate vicinity include tuffaceous sediments, black slate, argillite and schist.
Four trenches and three diamond-drill holes (work by Red Diamond Mines Ltd. in 1984) have intersected sphalerite and galena mineralization occurring within a quartz- calcite vein hosted in an andesite breccia. Minor arsenopyrite and chalcopyrite were also observed. At surface the vein is 10 to 45 centimetres wide over greater than 10 metres strike length. It strikes 040 to 045 degrees east and dips steeply northwest. The hangingwall consists of a 2-centimetre limonitic clay gouge.
Assay values from a channel sample of Trench 2 were 469.7 grams per tonne silver, 7.47 per cent lead, 6.56 per cent zinc, 0.07 gram per tonne gold and 0.11 per cent copper (Assessment Report 13246). The best gold intersection from diamond-drill hole splits was 5.8 grams per tonne gold over the interval 13.1 to 14.2 metres in drillhole 84-1 (Assessment Report 13246).
In 1982, Red Diamond Mines Limited completed an exploration program including soil sampling, geological mapping, and a magnetometer survey of the Snuffy and Lobo claims. Anomalous gold, silver, and nickel values were found. Geochemical values of alteration zones on the properties correlated with mineralized zones immediately north of the claims.
In 1984, diamond drilling was completed by Red Diamond Mines on the Nevermore Claim which observed veins containing lead, zinc, and silver increased in width, while decreasing in metal concentration with depth. One sample, DDH-84-1 found a true width of 0.68 metres of quartz-limonite vein containing 5.83 grams per tonne gold (Thomson, G. (2007-07-23): Compliance Report on the Emerald Property). The intersection occurred at 16.5 metres below the surface. Galena bearing float was found in a fault-controlled ravine 75 metres to the west of the drill site (Thomson, G. (2007-07-23): Compliance Report on the Emerald Property). Following this, a galena, sphalerite, and chalcopyrite bearing quartz-carbonate vein was found and an adit from past work was reopened. Further sampling and mapping of this vein indicated surface exposure to be 48 metres long with an average width of 0.5 metres with grading of 6.31 percent zinc, 8.78 percent lead, and 146.38 grams per tonne silver (Thomson, G. (2007-07-23): Compliance Report on the Emerald Property).
In 2006, Rio Minerals Limited for Cavan Ventures Incorporated completed an exploration program consisting of grid surveys, soil and silt geochemical surveys, rock sampling, and geological mapping. Soil and silt geochemistry gave overlapping anomalies to historic findings at Emerald and Voyageur areas. Specifically, lead, copper, and antimony patterns at the Voyageur locality. Two general trends of single element anomalies were observed. The first, an arsenic anomaly of a broad N-S trending zone along the eastern edge of the grid. The second, a silver anomaly of a broad WNW trending zone. Anomalous gold found in soil and silt sampling correlates poorly with lode mineralization of the area, but instead defined a broad, contiguous, NNW trending zone between Emerald and Voyageur locations.
