The Rex showing is situated at 610 metres elevation near Blewett, 9.6 kilometres west of Nelson. The exact location is uncertain.
The area is underlain by Jurassic pseudodiorite and pyroxenite of unknown affinity underlain by volcanic rocks of the Lower Jurassic Elise Formation, Rossland Group. These have been intruded by granodiorite of the Middle to Late Jurassic Nelson Intrusions (Nelson batholith).
Chalcopyrite occurs in an aplite dike within granitic rocks. No other information is available.
On behalf of Greenwich Resources Incorporated, Robertson Research Canada Limited conducted a soil sampling program over the Blewett claim group, including the area of the Rex occurrence, in 1983.
Coral Industries acquired the Venango property (MINFILE 082FSW087) to the immediate east in 1989 and amalgamated it with the nearby Granite-Poorman (Kenville; MINFILE 082FSW086) property.
The Kenville mine property, including the Venango workings, was acquired by Anglo Swiss Resources Incorporated in 1992. Teck Exploration Limited optioned the Kenville property from Anglo Swiss Resources in 1994 and amalgamated it with the adjacent Ron property. Teck completed 3083 metres of diamond drilling (16 drillholes), as well as induced polarization, resistivity, ground magnetometer and geochemical surveying. Low-grade porphyry-style mineralization and alteration was encountered over short drill intervals. Teck Exploration later dropped the option in 1997.
In 2002, Anglo Swiss Resources optioned the Kenville property to a joint venture among Babylon Enterprises Limited, Foaming Holdings Limited, Glacial Holdings Limited and Tracer Enterprises Limited. The joint venture group then optioned a percentage of their holdings to Gold Standard Resources Corporation. In 2005, on behalf of the joint venture group, Bob Burton carried out an exploration program of mapping, geochemical soil sampling and excavator trenching on the west side of Eagle Creek. The following year, work consisted of geochemical soil sampling, preparatory underground exploration, adit rehabilitation and trench reclamation.
In 2007 and 2008, Anglo Swiss Resources drilled 15 500 metres in 50 holes near the Kenville mine. By 2009, the Kenville property had been expanded to include the area of the Rex showing. In 2009, on behalf of Anglo Swiss Resources, Equity Exploration Consultants Limited undertook an exploration program consisting of 680 line kilometres of airborne electromagnetic geophysical surveying, surface diamond drilling, and underground rehabilitation and drilling. Ten diamond drill holes were completed on the south side of Eagle Creek, approximately 700 metres south of the Kenville mine.
By 2010, the Kenville property had been expanded to include separate claim groups to the north and south. In 2010, on behalf of Anglo Swiss Resources, St. Pierre Geoconsulting Incorporated conducted airborne magnetic and electromagnetic geophysical surveys over the entire Nelson Mining Camp area. Soil sampling was conducted over the central Kenville claim block, though the majority of the sampling was conducted in the area of the Silver Lynx occurrence (MINFILE 082FSW378) to the south.
