Questcorp Mining, a Canadian junior mining company, has launched its first phase work programme at the La Union Gold Project located in Sonora, Mexico.
The project comprises a 2,520ha site where Questcorp is working to secure full ownership from Riverside Resources by completing designated cash payments, issuing shares, and fulfilling exploration milestones.
The Phase 1 programme focuses on identifying drill targets and establishing drilling locations. Field operations have commenced with several key activities underway.
First, pilot lines for induced polarisation (IP) surveys are being installed across known mineralised zones. These measurements aim to refine the selection of initial drill holes by better characterising subsurface features.
Next, crews are collecting rhythmically bedded limestone and dolomite samples from host rock to central mineralised zones for Black Light analysis. This method will assist in mapping alteration vectors to pinpoint manto and chimney systems.
Geological teams are also mapping the collar sites and surface sections along IP lines to create an accurate framework for interpreting survey data ahead of first-pass drilling.
Additionally, rock and soil samples are being gathered from outer zones of the property. These efforts aim to support stratigraphic mapping and evaluate the extent of mineralised occurrences across the broader district tenure.
Questcorp president and CEO Saf Dhillon said: “We are first concentrating on de-risking the upcoming 1,500metre drill programme scheduled for mid to late Q3 through alteration mapping and IP geophysics.
“Under the technical expertise of John-Mark Staude and the Riverside team we are confident we are maximising every exploration dollar being invested at La Union.”
The La Union licence protects a carbonate replacement deposit hosted within Neoproterozoic sediments—limestones, dolomites and siliclastic rocks—overlying crystalline Paleoproterozoic formations in the Caborca Terrane.
Geological structures include both high‑angle normal faults and low‑ to medium‑angle thrust faults, which may have facilitated mineralising fluid movement.
Reported mineralisation types include polymetallic veins, replacement mantos, chimneys, and shear zones with reported grades reaching 59.4 g/t gold, 833 g/t silver, 11% zinc, 5.5% lead and 2.2% copper, along with elevated hematite and manganese oxide content.
These results, disclosed in last month’s technical report, align with expected carbonate replacement deposit characteristics and support ongoing exploration. Emerging targets also suggest potential for larger gold systems and possible porphyry‑copper mineralisation under the existing CRD model.
