The Enterprise occurrence is located on the north side of Nelse Creek, 400 metres north of the confluence of Kamloops Creek with Nelse Creek. The occurrence is part of three Reverted Crown grants; Enterprise (Lot 1449s), Teresa Fraction (Lot 869s) and Richelieu (Lot 942).
Development and exploration began on the occurrence in 1901 when the claims were first staked. The Enterprise and Richelieu was owned by S. Ray and associates and the Teresa Fraction by T. Graham. Development continued until 1905. No further work was recorded until 1916 when leased to E. George and T. Sullivan and in 1918 when leased to C. McRae. In 1925 and 1926, the property was operated by J. Dunham and E. Wanke, respectively. Work was again suspended until 1933 when leased to H. Lazier, who formed the Golden Kettle Mines Ltd. By this time development work consisted of three adits. In 1948, O. Johnson shipped 9 tonnes of ore. In 1962, S. Ruzicka shipped 30 tonnes of ore. In 1980, the property was staked by Dayton Creek Silver Mines Ltd. Further exploration work was conducted on the occurrence from 1980 to 1983. The adits and their associated geology, mineralization and assay values are described as follows.
The Enterprise occurrence lies within quartz diorite and granodiorite of the Middle Jurassic Nelson intrusions. To the east is a small outlier of Eocene Penticton sedimentary rocks composed of conglomerate, sandstone and shale. Surrounding the sedimentary and Jurassic plutonic rocks is granite of the Cretaceous to Tertiary Okanagan batholith.
The quartz veins which occur in adits 2 and 3 are reported to be discontinuous and erratic, due to the intrusion of granitic porphyry and diabase dikes.
A small isolated outcrop of quartzite, that is a Carboniferous to Permian Anarchist Group inlier, as well as quartz diorite, granite, granodiorite and diabase dikes are the reported lithologies on the property. Mineralization is confined to northeast striking, steeply dipping silicified shear zones within rhyolite porphyry and lenticular granodiorite bodies. The shear zones are reported to contain quartz veins and stringers, inclusions of country rock, fault gouge, pyrite, chalcopyrite, tellurides and minor galena.
Adit 1 is located a few metres above Nelse Creek. It was driven about 30 metres in a northwest direction for 24.4 metres. A 1.22-metre wide mineralized shear was exposed for most of its length. A 91-centimetre wide, northeast striking quartz vein is well developed at the portal but narrows near the adit face. Pyrite, chalcopyrite and minor galena in quartz comprises mineralization. Several sectors were stoped. The hostrock is granodiorite. A picked sample taken from Adit 1 in 1933 yielded 16.1 grams per tonne gold and 181.7 grams per tonne silver (Assessment Report 8611). A high grade gold and telluride lens (Colby Sector?) was reported mined. The lens was 7.6 metres long by 3.0 metres high. Two samples were reported to carry 406 to 822 grams per tonne gold and 0.30 to 0.70 per cent tellurium. The average assay values of 3 surface chip samples taken in 1981 were 5.1 grams per tonne gold and 33.0 grams per tonne silver (Assessment Report 8611). Similarly, the average of nine samples across an average width of 26.4 centimetres of vein at the portal, yielded 7.0 grams per tonne gold and 56.6 grams per tonne gold (Assessment Report 8611).
Adit 2 is located 30 metres northwest of Adit 1. It follows a quartz vein for 42 metres. The adit follows a 1-metre wide quartz vein which narrows to a stringer 24 metres from the portal but widens to a vein at the portal face. In 1981, the average of 8 adit samples taken across an average width of 50.5 centimetres yielded 2.8 grams per tonne gold and 30.7 grams per tonne silver (Assessment Report 8611). In the following year, an average of 10.2 grams per tonne gold was obtained from chip samples taken across an aggregate of 18 metres (Assessment Report 12006).
Adit 3 is reported to be 15.25 metres long following a silicified shear with negligible mineralization. A 91-centimetre chip sample taken in 1979 yielded 32.6 grams per tonne gold and 203.0 grams per tonne silver (Assessment Report 7478). In 1981, the average of 4 adit samples taken across an average width of 87.6 centimetres yielded 1.5 grams per tonne gold and 12.9 grams per tonne silver (Assessment Report 8611).
A total of 87 tonnes production occurred intermittently between 1918 and 1962. From this, 4261 grams of silver, 373 grams of gold, 1542 kilograms of copper, 399 kilograms of lead and 565 kilograms of zinc were recovered.
During 2014 through 2016, Carrara Exploration Corp. completed programs of geological mapping, geochemical (rock and soil) sampling and a ground magnetometer survey on the area as the Boomerang property. In 2015, a sample (1515) of outcrop from the Richelieu zone assayed 252.00 grams per tonne gold, 39.5 grams per tonne silver and 0.215 per cent lead over 0.20 metre (MacIntyre, D. (2016-11-10): Technical Report - Boomerang Gold-Silver-Lead-Zinc Property).
