The MANDY (Copper Queen) showing is located in the Cariboo region, approximately 4 kilometres southwest of Nyland Lake and 35 kilometres southeast of Quesnel, B.C.
The region is underlain by sedimentary and volcanic rocks of the Upper Triassic to Lower Jurassic Nicola Group of the Central Quesnel belt. The Nicola Group has been intruded by felsic alkalic stocks of Lower Jurassic age and, along the east side of the Quesnel River, by a calc-alkalic pluton of probable Cretaceous age. This pluton consists of quartz monzonite with dioritic and granodioritic phases cut by fine-grained granite and porphyritic granite dikes. Hydrothermal alteration of the pluton has occurred, evidenced by the presence of epidote, chlorite, quartz, biotite and carbonate along with quartz and quartz-ankerite veining. In some places these veins contain tetrahedrite, chalcopyrite, pyrite, malachite and azurite.
Quartz-ankerite veins also occur within the country rock intruded by the pluton. In the vicinity of the showing, rocks of the Nicola Group are very poorly exposed, being mainly covered by a thick accumulation of glacial gravels. A chip sample taken in 1986 across 1.5 metres of a quartz-ankerite vein in sheared porphyritic basalt yielded 3.3 per cent copper, 0.02 per cent lead, 0.45 per cent zinc, 435 grams per tonne silver and 0.65 grams per tonne gold (Assessment Report 15130). Recent mapping indicates that the property is underlain almost entirely by rocks of the plutonic complex. Therefore, it is not certain whether the basalt sampled was that of the Nicola Group, the overlying Miocene plateau basalt, or a pendant within the pluton.
The Mandy occurrence has been held and intermittently worked on since the mid 1930s and includes a 30 metre decline. In 1984, the A.T. Syndicate conducted stream sediment geochemical surveys on their Mandy mineral claims. In 1986, Durfeld Geological Management Ltd. collected soil, stream sediment and rock chip samples identifying single point anomalies in the Nyland Lake area. In 1989, B.J. Stewart established a geochemical sampling grid over the area and conducted magnetic and VLF-EM surveys over selected areas. Extensive glacial cover hinders soil sampling surveys over much of the area.
In 2018, a photogrammetric and geophysical study was conducted for Jedway Enterprises Ltd. In 2022 and 2023, R. Doucette and B. Hall ran programs of prospecting and soil (66) and rock (12) sampling over western regions of their Nyland property, mostly in the area of the Mandy showing. The highest values were obtained from two rock samples taken at the Mandy showing: 1.3 and 1.17 grams per tonne gold, 1210 and 806 grams per tonne silver, 8.59 and 5.8 per cent copper, 3.39 and 1.72 per cent antimony and 1.28 per cent and 0.85 zinc, respectively (Assessment Report 40732).
