Our Project

Project Highlights

The Koonenberry Gold Project is considered prospective for large scale intrusive gold mineralisation and has geological similarities to the Stawell Zone of the Delmarian Orogen², located in western Victoria, which has recorded gold production that exceeds 163t. The existence of a substantial gold field overlying the exploration targets is considered to enhance this as an exploration target. Koonenberry Gold has identified sufficient geological evidence to indicate potential for orogenic and placer gold mineralisation supported by the following project highlights:

  • Historical artisanal production exceeding 1,870 kg of gold¹ sourced from many relatively small lode and alluvial gold sources and described in records kept by the NSW Department of Primary Industry.
  • Deformed turbidite sequences that correspond to those extensively exploited for gold in Victoria.
  • Extensive mapped auriferous quartz vein systems.
  • Extensive placer and palaeoplacer deposits, currently being exploited by prospectors and fossickers and reportedly yielding significant quantities of gold.
  • The presence of the west-northwest trending Koonenberry Fault, that apparently provided fluid pathways.
  • There has been no effective testing of the mineralisation to date.
  • Numerous geochemical soil anomalies in association with splay faults off the Koonenberry Fault

¹ Geological Survey of New South Wales, Bulletin 32(5), 2003

² Greenfield JE & Reed WJ 2006. Orogenic gold in the Tibooburra area north of Broken Hill- an extension of the Victorian goldfields? In: Korsch R.J. & Barnes R.G. compilers. Broken Hill Exploration Initiative: abstracts for the September 2006 conference. pp. 60–69. Geoscience Australia Record 2006/21

Location and Tenure

The Koonenberry Gold Project is located in north-western New South Wales, approximately 160km northeast of the major mining and cultural centre of Broken Hill and 40km west of the opal mining town of White Cliffs. Good access is available via main roads connecting Broken Hill, White Cliffs and Tibooburra.

The project covers an area of about 1,339 km2 comprising a total of 12 Exploration Licences all of which are in good standing. The licences are held beneficially by 100% owned subsidiary company Lasseter Gold Pty Ltd.

Geology and Mineralisation

The Koonenberry Belt is an orogenic belt with the potential to become a major new mineral province. The lithostratigraphy, the structural style, mineralisation timing and tectonic setting all point favourably to a comparison with the Western Victorian Goldfields and the likelihood of the Project area being a continuation of the Stawell Zone. The mineralisation styles range from lode style to alluvial and deep lead mines.

The Project area covers a series of Mid-Cambrian marine sediments of the Teltawongee and Ponto Groups, which were deposited in a volcanic arc environment prior to being deformed in the Late Cambrian Delamerian Orogeny. This orogeny is characterised by intense compressive deformation, resulting in tight to isoclinal upright folds and a vertical slaty cleavage.

Koonenberry Gold has spent over

$4m defining targets to date

Target Summaries

Exploration is considered to be early stage, with new prospects being identified during reconnaissance mapping and soil sampling.

The Project area covers a series of Mid-Cambrian marine sediments of the Teltawongee and Ponto Groups, which were deposited in a volcanic arc environment prior to being deformed in the Late Cambrian Delamerian Orogeny. This orogeny is characterised by intense compressive deformation, resulting in tight to isoclinal upright folds and a vertical slaty cleavage.

The Koonenberry Belt has been subject uplift, sedimentation and deformation throughout the Phanerozoic, including the Benambran Orogeny, which is considered to be the main phase of gold mineralisation. It is comparable with the Stawell Zone of the Victorian Goldfields. On the western side of the Koonenberry Project is the Koonenberry Fault, which is a long-lived deep crustal structure traceable in outcrop for over 225 km.

Gold occurs as structurally controlled as lode-style veins or as alluvial concentrations. Lode gold is often associated with laminated quartz veins and has also been documented in quartz vein stockworks. Gold is associated with pyrite and arsenopyrite, galena, chalcopyrite and sphalerite. Documented veins range in width from millimetre scale to several metres in width, with the strike of some individual veins exceeding several hundred metres. Historical production often documented head grades of sorted ore at two to three ounces of gold per tonne. Underground mining depth is undocumented but is not considered to have proceeded beyond 10 m in depth.

Gold was first discovered near Mount Poole in 1880 and alluvial mining and fossicking up to 1945 accounted for most of the >940 kg of gold reportedly produced1. Mining was hampered by lack of food and water, remoteness, and disease. Workings occur within the Project area at Williams Peak where miners tunnelled through soft weathered basement to exploit palaeoplacer mineralisation in the overlying pebble conglomerates of the Namur Formation. It is not known how much gold was recovered, nor how extensive is the network of shallow tunnels.

Recently, the whole Project area has been exploited by prospectors with metal detectors. Reports of significant gold being recovered in the Lasseters area are supported by the success of Koonenberry Gold in the same vicinity. The amount of gold removed is impossible to quantify and there has been almost no modern exploration for gold.

Reef mining has occurred in some areas, although not as extensively as with the palaeoplacers. Small workings are commonly encountered during mapping, but the main workings discovered to date occur at a prospect currently referred to as The Chimney, where a clean milky white quartz reef was exploited.

Copper, silver, and lead have also been mined in the region, between 1870 and 1908 at the Wertago copper field and the Nuntherungie silver field. These are clusters of relatively small-scale deposits west of the Koonenberry Fault.

The Koonenberry Belt mineralisation is derived from fluids emanating from the deep crustal Koonenberry Fault and several phases of deformation with the potential to focus, trap, concentrate or remobilise mineralised fluids. This has resulted in several recognised styles of mineralisation at the Koonenberry Project:

  • Turbidite hosted orogenic gold, associated with the Benambran Orogeny and analogous with the Stawell Zone of the Western Victorian goldfields
  • Placer and Palaeoplacer gold that has been exploited historically and is the objective of current prospecting
  • Epithermal Ag-Pb-Cu, as evidenced by the Wertago Copper Field and numerous copper showings within the Project area
  • Hydrothermal replacement deposits at basin margins evidenced by mineralisation at the Nuntherungie Basin
  • Volcanogenic Massive Sulphide (VMS), as evidenced by Ausmon Resources’ Grassmere deposit (5.75Mt @ 1.03%Cu, 0.35% Zn, 2.3 g/t Ag and 0.05 g/t Au)2 hosted by Ponto Group sediments, which outcrop on the western side of the Project area.

¹ McQueen, 2007
² https://ausmonresources.com.au/koonenberry

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