The UPC occurrence is located at the head of Porphyry Creek, 13 kilometres southeast of Johanson Lake. The mineralization, documented as the upper Porphyry Creek area in Assessment Report 21521, comprises gold-bearing quartz veins, in part localized along shear zones, scattered through an east-west zone about one kilometre long. It is hosted mainly in the northwest end of a large, elongate, mafic-ultramafic pluton referred to as the Abraham Creek complex, but some mineralization also occurs in adjacent volcaniclastic rocks of the Upper Triassic Takla Group. The pluton, of Late Triassic age, comprises a complex mixture of diorite, gabbro, clinopyroxenite and hornblendite (EMPR Fieldwork 2003, pages 83-100). The quartz veins commonly contain pyrite, chalcopyrite and malachite. A grab sample from one shear vein with only a trace of pyrite contained 25.0 grams per tonne gold and 46.1 grams per tonne silver (Assessment Report 21521, Sample S146).

In 1992 Noranda carried out 1:5,000 scale geological and alteration mapping and in 1993, they drilled 6 reverse circulation holes on the Kliyul skarn zone (Assessment Report 23033) and followed up with an airborne magnetic, EM, and radiometric survey that extended to the south (Assessment Report 23379). This airborne survey also covered (or nearly covered) 25 MINFILE occurrences including Soup (094D 025), South Soup (094D 105) and UPC (094D 183) and (094D 029).

In 2010, the Serengeti Resources Inc Croy-Bloom program consisted of an Electromagnetic Survey perpendicular over the main outcropping vein in order to determine if there was an appreciable depth extent to several northwest trending veins of massive chalcopyrite and pyrite that occur in the northwestern portion of the claim block (Assessment Report 32239). A 1.5-kilometre Max-Min survey was carried out over the UPC showing (094D 183) area but failed to identify any significant EM conductors. These unexpected results over a known mineralized trend were thought to potentially be due to chaining errors.

In 2012, Serengeti completed a prospecting and geological site visit on the Croy-Bloom property taking 19 rock samples; the highlight (from 2 samples) was 1.7 per cent copper and 136.6 grams per tonne (Assessment Report 33994). Eleven of 19 samples from 2012 were collected starting just east of the UPC MINFILE plot (094D 183) and sporadically for about 600 metres to the southeast. The other 8 samples were collected starting about 400 metres east of the Soup Prospect (094D 025) and then over a length of 600 further to the northeast (Assessment Report 33994, Rock Sample Locations map). Serengeti Resources Inc. provided the results of a prospecting and surface rock sampling conducted in September on the Croy Bloom property (Serengeti Resources Inc., Press Release, November 13, 2012). The objectives of the 2012 exploration program were to evaluate an area known as the Karen Cirque and Saddle Gulley zone.

See Soup (094D 025) and Croy (094D 015) for related information and a more complete bibliography.