Pigeon Hill Project — Sophia — Ulara Resources
Located 15km northeast of Charters Towers, covering 10,000 hectares. The tenement is positioned within a structurally complex gold-bearing region, historically known for mesothermal quartz-gold veins and breccia-hosted mineralisation.
Sophia exhibits the hallmark characteristics of typical narrow-vein orogenic gold systems: highly variable gold grades, sericite + chlorite + pyrite alteration of host granite, and a laterally extensive fault–breccia corridor. Historical mining, gold intersections in drilling and surface samples up to 13 g/t Au demonstrate meaningful mineralisation and structural continuity, creating clear potential for resource definition through modern exploration and drilling.
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Project facts
EPM 28673 · 10,000 hectares · Exploration · Gold, Copper, Rare Earth Elements
Key highlights
High-Grade Gold
- Rock chip samples returned up to 8.5 g/t Au, with associated copper (1,000 ppm Cu) and lead (4.95% Pb)
- Stream sediment surveys identified gold anomalies exceeding 10 ppb Au
Historical Drilling Results
- RC drilling in nearby areas recorded up to 16m @ 8.6 g/t Au and 28m @ 2.86 g/t Au
- Track Pit Prospect drill holes intercepted up to 3 g/t Au in quartz-carbonate veins
Untested Magnetic Anomalies
- Geophysical data shows two strong magnetic anomalies, possibly related to hidden intrusive-hosted gold deposits
Proximity to Historic Gold Mines
- Close to Hadleigh Castle (~0.3 Moz Au) and Charters Towers (7.1 Moz Au)
Independent Geological Review (Dr Simon Richards, KGS)
- Part of the Pigeon Hill Project (Sophia + Bentley), ~20km NE of the 6.6 Moz Au Charters Towers deposit
- Confirmed as highly prospective for Charters Towers-style narrow vein orogenic gold hosted in multi-vein breccia systems with sericite, chlorite and disseminated pyrite alteration
- Three Mile Creek prospect identified as the priority target, with rock chip samples reaching 13 g/t Au
- E-W trending mineralised structure may extend over 12km, hosting a string of historical mines
- Reviewer concludes geological evidence for significant gold beyond the limits of historical drilling is very high
Regional Geological Context
Bruvel’s regional synthesis describes Charters Towers gold mineralisation in granite-hosted quartz–carbonate–sulphide veins occupying narrow fissures within major shear zones. It also discusses how fault reactivation, subsidiary structures and zones of dilation can create pathways for mineralising fluids.
Relevance to Sophia
This regional framework is consistent with the vein, breccia and alteration corridor described at Sophia in Dr Simon Richards’ independent geological review. It provides a geological basis for investigating structural continuity, intersecting faults and favourable host rocks along the mapped corridor, rather than relying on isolated surface grades alone.
Source: Fred John Bruvel (1997), Major Structural Settings of Gold Endowed Provinces in Eastern Queensland, James Cook University of North Queensland, pp. 55–58, 125, 136–138.
The thesis is regional research, not a study of Ulara’s tenement or verification of its exploration results. Geological similarities do not demonstrate grade, continuity, tonnage or an economic deposit at Sophia; these require project-specific exploration and drilling. No historical production or resource totals from the thesis are presented as current estimates.
Project questions
Where is the Sophia project?
Sophia (EPM 28673) is located in Charters Towers, Queensland.
How large is the Sophia tenement?
The Sophia tenement covers 10,000 hectares.
Which commodities does Sophia target?
The project targets Gold, Copper, Rare Earth Elements. Its current status is exploration.
Does Sophia have a declared Mineral Resource?
Ulara has not declared a Mineral Resource or Ore Reserve for this project. Historical exploration results and surface samples do not establish average grade, continuity or an economic deposit. Nearby deposits are geological context only, not predictions of results at Ulara's tenements.