The Alpha-Beta occurrence is located on the Robertson River, near the its junction with Long Creek.

The area is underlain by Lower Jurassic Bonanza Group volcanics consisting of lava, tuff and breccia of mainly basaltic to rhyolitic composition. It contains occasional interbeds and sequences of marine argillite and greywacke. A stock of the Early to Middle Jurassic Island Plutonic Suite (formerly called the Island Intrusions) lies to the southwest of the showings. The volcanics have been intruded by dykes and irregularly shaped bodies of granodiorite, granite porphyry and diorite porphyry. Limestone, reported to occur as lenses and roof pendants in both the volcanics and the intrusive, is probably related to the Quatsino Formation, Vancouver Group.

The lavas and sediments and the granodiorite have been locally silicified and altered to skarn. The skarns are of four main types: 1) garnet-epidote; 2) red garnetite; 3) light buff to brown garnetite; and 4) epidotite. Magnetite occurs most commonly in with the garnet-epidote skarn but also occurs with the others. Distribution of skarn in drill core indicates that it may form along favourable beds and also along fractures in tuff, andesite or granodiorite. Pyrite and chalcopyrite are found locally in the skarn and, like the magnetite, usually in the garnet-epidote type.

The original showings were located in 1904 at the confluence of the Robertson River and "Long" Creek. In 1928, an adit was collared in Long Creek and work continued until about 1930. The property was acquired in the early 1960's by Albeta Mines Limited and work continued. By the end of 1963, several hundred metres of diamond drilling and at least 233 metres of underground development had occurred as well as substantial stripping, trenching and geophysical work.

Ore sections opened up in the mineralized area shows some continuity for nearly 120 metres underground, averaging 1.4 to 3.0 per cent copper over widths averaging 1.5 to 1.8 metres. The host skarn is known to attain widths in excess of 27 metres. A high grade series of ore shoots on a parallel zone averaged 8.60 per cent copper over a 1.4 metre true width, as ascertained from 5 diamond-drill holes.

A combined ore reserve figure calculated in April 1963, from 9 zones above the 920 level, was reported to total 11,482 tonnes grading an average of 2.20 per cent copper. Another 2700 tonnes in the probable and possible category were estimated below the 920 level; and 3,600 tonnes were estimated in the possible category above the 920 level (Progress Report for Sept., Oct., and Nov., 1963, Albeta Mines Ltd.).

In 1963, a total of 535 tonnes of ore with a grade of 4 per cent was mined and shipped from the Alpha-Beta property (Minister of Mines Annual Report 1963, page 122). From this ore, a total of 10,264 grams of silver, 187 grams of gold and 23,390 kilograms of copper were produced (Mineral Policy data). By November 1963, shipping- grade ore had been depleted and the mining operations were terminated.

In 2008 and 2011, geochemical sampling programs were completed on the area as the Juniper claim. In 2008, assays of tailings yielded values up to 9.1 per cent copper (Assessment Report 30705). In 2011, samples of chalcopyrite assayed 24.37 per cent copper and 27.9 per cent iron, while samples of magnetite assayed 1.62 oer cent copper and 38.25 per cent iron (Assessment Report 32286).