The Overlander occurrence is located approximately 7 kilometres southeast of Greenwood, on the southern slope of Mount Attwood. Access to the property is by the McCarren Creek road to the Lone Star–Phoenix haulage road.
The property is underlain by Permian and/or Triassic greenstones and microdiorite (Eholt Formation, Brooklyn Group). A pyritized, limonitic, northerly striking, steeply dipping quartz vein cuts intensely altered cherty-argillite near an intrusive granodiorite stock. The vein strikes for 120 metres and is 0.2 to 0.45 metre in width. A channel sample returned 20.2 grams per tonne gold over 0.4 metre (Assessment Report 16829).
At an old adit site situated below the haulage road, skarn mineralization is noted in the dump material. Minerals consist of chalcopyrite, pyrrhotite, malachite, bornite and pyrite, with lesser sphalerite, galena and molybdenite. Gangue minerals are quartz, carbonate, garnet, epidote and possibly apatite.
Little is known about the early history of the property. Development on the property is limited, composed mainly of short adits and shallow shafts on the Overlander Fr. (L.1686) claim and the Lookout claim, approximately 1 kilometre west of the Overlander occurrence. These prospect shafts and adits were apparently developed in the late 1950s. The existence of the Overlander workings, in which a narrow but persistent northwest-trending structure with significant gold values is traced over a strike length of 200 metres, was first reported in 1983 by V. Cukor of Corinthian Resources Ltd. Cukor (Assessment Report 11071) erroneously showed the Overlander mineral occurrences as situated on the Crown-granted Lookout claim (L.930).
In 1986, Ossa Resources Ltd. conducted sampling and geophysics in the area. Results from the 776-sample soil sampling program identified an anomalous area adjacent to and east of the Overlander zone, defined by greater than 61.5 parts per million copper, 31.6 parts per million arsenic, 28.2 parts per million lead and 0.42 part per million silver (NI 43-101 Technical Report, Banas and Dufresne, November 26, 2013).
During 2008 through 2013, Grizzly Discoveries Inc. completed programs of soil, stream sediment and rock sampling, geological mapping, ground geophysical surveys and two diamond drill holes on the area as the Overlander area of the Greenwood property. Results of the sampling included 54 soil samples with more than 50 parts per billion gold and five rock samples with more than 10 grams per tonne gold (Press Release, Grizzley Discoveries Inc., August 2, 2011). The anomalous gold results are spatially correlated to geophysical and geological anomalies.
In 2008, a sample (08BMP013) from a quartz vein in an adit assayed 25.86 grams per tonne gold and 21.5 grams per tonne silver, while the following year samples yielded up to 7.33 grams per tonne gold, 19.8 grams per tonne silver and 2.43 per cent copper (Dufresne, M. (2013-11-25): Technical Report for the Greenwood Gold Project).
In 2011, samples yielded values of up to 27.30 grams per tonne gold and 22.8 grams per tonne silver (Dufresne, M. (2013-11-25): Technical Report for the Greenwood Gold Project).
