The Dodge-Sullivan Two occurrence is located on the eastern slopes of Mount Rykert.
Mineralization in the Dodge-Sullivan Two system is spread over a large area; the location is centred on tourmalinite showings on the northern edge of the Dodge claims (Assessment Report 14951) near the headwaters of Dodge Creek, a south-flowing tributary to Boundary Creek. Further lead-zinc mineralization also occurs on the gently sloping east spur of Mount Rykert and in the headwaters of Urmston Creek (on the Sullivan Two claim; Assessment Report 17387).
The area is underlain by Middle Proterozoic Purcell Supergroup sedimentary rocks, metamorphosed to middle or upper greenschist facies (garnet-staurolite grade in places). In particular, the property is underlain by Middle Aldridge strata, thought from correlation of marker horizons to lie 900 metres above the Lower to Middle Aldridge contact at which the Sullivan (082FNE052), a world-class sedimentary exhalative lead-zinc-silver deposit lies.
Host rocks on the property include muscovite-biotite-garnet phyllite, micaceous quartzite, thin to massive bedded quartz wacke, argillite, and a calcsilicate siltstone layer intimately associated with mineralization. Gabbro sills belonging to the Moyie intrusions, also part of the Purcell Supergroup, are commonly intercalated with the metasedimentary rocks. These rocks strike generally north- northeast and dip gently at 20 to 30 degrees east.
Exploration on the Dodge-Sullivan Two property was prompted by the report of "large quantities of milling grade galena-quartz float" found in a burned area (Minister of Mines Annual Report 1929). All efforts so far have failed to relocate the site of, or source of, this float. However, mineralization consisting of a layer of quartz, carbonate and talc rock (the calcsilicate layer) containing disseminated galena, sphalerite and pyrite, with significant silver values, was discovered on the Dodge claim and traced geochemically onto the Sullivan Two claim. This mineralization is structurally overlain by a tourmalinite pipe with fragmental rocks typical of those at the Sullivan deposit. However, since the stratigraphy in this area is thought to be overturned, it is likely that the tourmalinite and associated albitized rocks are actually below the level of the stratabound mineralization. Sericitic and chloritic alteration are also noted on the property; such alteration is prominent at the Sullivan deposit. Drilling traced the calcsilicate layer below the surface and investigated a garnetiferous horizon which is exposed at surface as a manganiferous gossan; manganiferous garnets are prominent just below the ore horizon at the Sullivan deposit. Assays of representative material from surface trenches are up to 1.87 per cent lead, 1.46 per cent zinc and 24 grams per tonne silver; however, no mineralized interval was intersected in diamond drilling in 1990 to 1991 (Assessment Report 21589). Core losses in blocky ground led to the abandonment of four holes and the conclusion that the main stratigraphic target had not been tested. In 1992, a two hole diamond drill program, totalling 590 metres, was compeleted by White Knight Resources.
A deep-penetrating electromagnetic survey by Cominco Ltd. on the Dodge claims revealed only weak cross-over conductors (Assessment Report 19225). In 1996, Quest International Resource Corporation drilled approximately 4000 metres in 8 holes on the Del claims at the head of Dodge Creek.
