Tungsten bearing garnet-diopside skarn occurs adjacent to the Dodger granitic stock of the Middle to Late Jurassic Nelson Intrusions and within the Lower Cambrian Laib Formation. The ores are situated within the upper limb of the recumbent Jersey anticline and are confined to skarn zones within the Truman and Reeves members of the Laib Formation.

The orebody consists of three zones of fine, disseminated scheelite grains in light brown to green garnet-diopside skarn. The upper and lower zones are bounded by marble while the middle zone is in contact with unmineralized skarn, argillite and marble of the Truman Member. The tungsten bearing skarns are generally conformable to the marble layering and extend outwards from the granite contact up to 6 metres with some zones extending as far as 25 metres from the contact. Scheelite is accompanied by some pyrrhotite, biotite, quartz, molybdenite and/or powellite. Also reported (G. Ray) are arsenopyrite, gold, tellurides, and fluorite (G. Ray, 1995).

The average width of ore mined was 2 to 3 metres but the thickness of the middle skarn zone exceeded 9 metres near its western limit adjacent the Dodger stock. The mine was reported to be in operation between 1951 and 1958 during which it produced more than 258,500 tonnes of tungstic oxide (WO3) ore, (Bulletin 41, page 119). Between May 1970 and August 1973, 204,960 tonnes of ore with an average grade of 0.54 per cent WO3 was produced from the mine (Geology, Exploration and Mining in British Columbia 1973, page 57). During this latter mine life, ore was combined and processed with ore from the nearby Invincible mine (082FSW218) and therefore specific amounts of commodities recovered from the Dodger are not available.

The Dodger was commonly referred to as the Dodger 4200 mine, the East Dodger was called the Dodger 4400 Mine, but both essentially mined the same orebody at different levels and were joined by workings on the 4300 level. All ore was trucked via the Dodger 4200 level workings to the mill near the 4200-level portal. The production statistics are included with those of the Jersey mine (082FSW009).

In 2006, Sultan Minerals Inc. reported an updated tungsten resource for the Dodger and Invincible deposits of 2.277 million tonnes measured and indicated grading 0.37 per cent tungsten tri-oxide with an additional 1.098 million tonnes inferred grading 0.40 per cent tungsten tri-oxide, using a 0.15 per cent tungsten tri-oxide cut-off grade (Cowle, S. (2007-05-23): Technical Report on the Jersey Emerald Property, British Columbia).

Also, at this time an updated molybdenum resource was reported for the Dodger 4200 zone of 25,401 tonnes indicated grading 0.098 per cent molybdenum and 436,356 tonnes inferred grading 0.103 per cent molybdenum, using a 0.05 per cent molybdenum cut-off grade (Cowle, S. (2007-05-23): Technical Report on the Jersey Emerald Property, British Columbia).

In 2008, Sultan Minerals reported a mineral resource estimate for the East Emerald and Emerald mine Tungsten zones of 232,240 tonnes indicated grading 0.19 per cent tungsten tri-oxide with an inferred resource of 1,008,800 tonnes inferred grading 0.28 per cent tungsten tri-oxide, using a 0.15 per cent tungsten tri-oxide cut-off grade (Giroux, G.H. (2014-03-28): Technical Report for the Jersey-Emerald Property). Also at this time a combined resource for the Invincible, Dodger, East Emerald and Emerald mines tungsten zones was reported at 2.509 million tonnes measured and indicated grading 0.36 per cent tungsten tri-oxide and 2.204 million tonnes inferred grading 0.34 per cent tungsten tri-oxide, using a 0.15 per cent tungsten tri-oxide cut-off grade Giroux, G.H. (2014-03-28): Technical Report for the Jersey-Emerald Property).

In 2015, Margaux Resources reported a tungsten mineral resource for the East Emerald zone of 508,931 tonnes indicated grading 0.201 per cent tungsten tri-oxide and 3,230,000 tonnes inferred grading 0.217 per cent tungsten tri-oxide, using a 0.15 per cent tungsten tri-oxide cut-off grade (Park, V. (2015-03-15): Technical Report for the Tungsten Resource Update of the Jersey-Emerald Property). Also, at this time a combined resource for the Invincible, Dodger, East Emerald and Emerald mines tungsten zones was reported at 2.786 million tonnes measured and indicated grading 0.341 per cent tungsten tri-oxide and 4.971 million tonnes inferred grading 0.273 per cent tungsten tri-oxide, using a 0.15 per cent tungsten tri-oxide cut-off grade (Park, V. (2015-03-15): Technical Report for the Tungsten Resource Update of the Jersey-Emerald Property).

In 2016 and 2017, Margaux Resources completed programs of ground geophysical surveys and diamond drilling, totalling 1997 metres in 12 holes, on the area. Further drilling was reported to have been completed in 2018.

In July 2021, an updated openpit and underground mineral resource for the Jersey-Emerald project was reported at 1 472 803 tonnes indicated grading 0.173 per cent tungsten tri-oxide, 0.021 per cent molybdenum and 0.050 gram per tonne gold with an additional 5 128 045 tonnes inferred grading 0.227 per cent tungsten tri-oxide, 0.026 per cent molybdenum and 0.081 gram per tonne gold (Moose Mountain Technical Services [2021-07-26]: NI 43-101 Resource Estimate for the Jersey-Emerald Project).