Discovered 2011.
Within the Triton North project.

One infilled shaft existed at the location before modern mining, indicating very minor unknown historical mining. An underground mine was developed at the site in 2023 by Tritton Resources Pty Ltd, a wholly owned subsidiary of Aeris Resources Ltd.

The deposit is small, high grade (resource 900KT at 2.6% g/t Cu and 0.8% g/t Au). Mineralised lodes trend NNW-SSE, and dip steeply east at 80 degrees. At least eight lodes have been identified ranging from 0.1-0.21 metres thick.

The lodes form elongated flattened pipe like bodies hosted by metasedimentary sandstone in the Narrama Formation.

Mineralisation is only found in D3 shears. The sulphides in the shears shows partial replacement of magnetite by pyrite then chalcopyrite with pyrrhotite, low Fe sphalerite. Gangue is Fe chlorite, siderite, quartz, stilpnomelane, albite, K feldspar and white mica. Non mineralised sections of the shears are dominated by Fe rich chlorite, white mica with magnetite, fine grained titanite and allanite. Fine grained spessartine garnet may be associated with the magnetite.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Copper

ⓘ Gold

Mineral List

14 valid minerals.

Rock Types Recorded

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Schist

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

References:

Simpson, Brenainn, Fitzherbert, Joel, Moltzen, Jake, Baillie, Ian, Cox, Brad, Huang, Huiqing (2024) Magnetite trace element characteristics and their use as a proximity indicator to the Avoca Tank Cu-Au prospect, Girilambone copper province, New South Wales, Australia. Mineralium Deposita, 59 (1) 169-187 doi:10.1007/s00126-023-01204-9

ⓘ 'Allanite Group'

Formula: (A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)

References:

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

Gilligan, L.B., Byrnes, J.G. (1995) Cobar Metallogenic Map 1:250 000. Metallogenic Study and Mineral Deposit Data Sheets SH/55-14. Geological Survey of New South Wales

ⓘ 'Chlorite Group'

References:

ⓘ Hematite

Formula: Fe₂O₃

References:

Gilligan, L.B., Byrnes, J.G. (1995) Cobar Metallogenic Map 1:250 000. Metallogenic Study and Mineral Deposit Data Sheets SH/55-14. Geological Survey of New South Wales

ⓘ 'K Feldspar'

References:

ⓘ 'Limonite'

References:

Gilligan, L.B., Byrnes, J.G. (1995) Cobar Metallogenic Map 1:250 000. Metallogenic Study and Mineral Deposit Data Sheets SH/55-14. Geological Survey of New South Wales

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

References:

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

References:

Gilligan, L.B., Byrnes, J.G. (1995) Cobar Metallogenic Map 1:250 000. Metallogenic Study and Mineral Deposit Data Sheets SH/55-14. Geological Survey of New South Wales

ⓘ 'Mica Group'

References:

ⓘ Native Gold

Formula: Au

References:

Gilligan, L.B., Byrnes, J.G. (1995) Cobar Metallogenic Map 1:250 000. Metallogenic Study and Mineral Deposit Data Sheets SH/55-14. Geological Survey of New South Wales

ⓘ Pyrite

Formula: FeS₂

References:

Gilligan, L.B., Byrnes, J.G. (1995) Cobar Metallogenic Map 1:250 000. Metallogenic Study and Mineral Deposit Data Sheets SH/55-14. Geological Survey of New South Wales

ⓘ Pyrrhotite

Formula: Fe_1-xS

References:

ⓘ Quartz

Formula: SiO₂

References:

Chrismas, D.J., Uren, B.J. Exloration Licence 754, Girilambone, N.S.W. Exploration Report 18 April to 18 October, 1975, Australian Selection (Pty.) Ltd, NSW Geological Survey Report GS1975/288.

ⓘ Siderite

Formula: FeCO₃

References:

ⓘ Spessartine

Formula: Mn²⁺₃Al₂(SiO₄)₃

References:

ⓘ Sphalerite

Formula: ZnS

References:

ⓘ Stilpnomelane

Formula: K₄Fe²⁺₄₈[Si₆₄Al₈]O₁₆₄(OH)₅₂ · nH₂O

References:

ⓘ Titanite

Formula: CaTi(SiO₄)O

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Gold	1.AA.05	Au
Group 2 - Sulphides and Sulfosalts
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Hematite	4.CB.05	Fe₂O₃
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Siderite	5.AB.05	FeCO₃
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
Group 9 - Silicates
ⓘ	Spessartine	9.AD.25	Mn²⁺₃Al₂(SiO₄)₃
ⓘ	Titanite	9.AG.15	CaTi(SiO₄)O
ⓘ	Stilpnomelane	9.EG.40	K₄Fe²⁺₄₈[Si₆₄Al₈]O₁₆₄(OH)₅₂ · nH₂O
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
Unclassified
ⓘ	'Chlorite Group'	-
ⓘ	'Limonite'	-
ⓘ	'Mica Group'	-
ⓘ	'K Feldspar'	-
ⓘ	'Allanite Group'	-	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
H	ⓘ Stilpnomelane	K₄Fe₄₈²⁺[Si₆₄Al₈]O₁₆₄(OH)₅₂ · nH₂O
H	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
C	Carbon
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	ⓘ Siderite	FeCO₃
O	Oxygen
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Hematite	Fe₂O₃
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Siderite	FeCO₃
O	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
O	ⓘ Stilpnomelane	K₄Fe₄₈²⁺[Si₆₄Al₈]O₁₆₄(OH)₅₂ · nH₂O
O	ⓘ Titanite	CaTi(SiO₄)O
O	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Al	ⓘ Stilpnomelane	K₄Fe₄₈²⁺[Si₆₄Al₈]O₁₆₄(OH)₅₂ · nH₂O
Si	Silicon
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Quartz	SiO₂
Si	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Si	ⓘ Stilpnomelane	K₄Fe₄₈²⁺[Si₆₄Al₈]O₁₆₄(OH)₅₂ · nH₂O
Si	ⓘ Titanite	CaTi(SiO₄)O
Si	ⓘ Allanite Group	(A1²⁺REE³⁺)(M1³⁺M2³⁺M3²⁺)O[Si₂O₇][SiO₄](OH)
S	Sulfur
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Pyrite	FeS₂
S	ⓘ Pyrrhotite	Fe_1-xS
S	ⓘ Sphalerite	ZnS
K	Potassium
K	ⓘ Stilpnomelane	K₄Fe₄₈²⁺[Si₆₄Al₈]O₁₆₄(OH)₅₂ · nH₂O
Ca	Calcium
Ca	ⓘ Titanite	CaTi(SiO₄)O
Ti	Titanium
Ti	ⓘ Titanite	CaTi(SiO₄)O
Mn	Manganese
Mn	ⓘ Spessartine	Mn₃²⁺Al₂(SiO₄)₃
Fe	Iron
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Hematite	Fe₂O₃
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Pyrrhotite	Fe_1-xS
Fe	ⓘ Siderite	FeCO₃
Fe	ⓘ Stilpnomelane	K₄Fe₄₈²⁺[Si₆₄Al₈]O₁₆₄(OH)₅₂ · nH₂O
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Zn	Zinc
Zn	ⓘ Sphalerite	ZnS
Au	Gold
Au	ⓘ Native Gold	Au

Other Regions, Features and Areas containing this locality

Australia

Lachlan OrogenOrogen
- Central NSW - Omeo ProvinceGeologic Province

Australian PlateTectonic Plate

Lachlan Fold Belt
- Wagga-Omeo Metamorphic ComplexOrogenic Belt

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Chrismas, D.J., Uren, B.J. Exloration Licence 754, Girilambone, N.S.W. Exploration Report 18 April to 18 October, 1975, Australian Selection (Pty.) Ltd, NSW Geological Survey Report GS1975/288.

NSW Geological Survey Report GS1976/109.

NSW Geological Survey Report GS1980/454.

Aeris Resource Ltd (2023) Update on Avoca Tank Mine Development Project, ASX/Media Release, 10 January 2023

Aeris Resources Ltd (2025) Tritton Operation Drilling Update, ASX/Media Release, 15 December 2025

RW Corkery and Co Pty Limited (2012) Review of Environmental Factors for Mineral Exploration Activities within Exploration Licence No. 6126 for the Avoca Tanks Project, Tritton Resources Ltd, May 2012

Gilligan, L.B., Byrnes, J.G. (1995) Cobar Metallogenic Map 1:250 000. Metallogenic Study and Mineral Deposit Data Sheets SH/55-14. Geological Survey of New South Wales

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Avoca Tank, Girilambone, Canbelego Co., New South Wales, AustraliaiRegional Level TypesAvoca TankProspect GirilamboneTown Canbelego Co.County New South WalesState AustraliaCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

Select Mineral List Type

Commodity List

Mineral List

Rock Types Recorded

Select Rock List Type

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Avoca Tank, Girilambone, Canbelego Co., New South Wales, Australia i
Regional Level Types
Avoca Tank Prospect
Girilambone Town
Canbelego Co. County
New South Wales State
Australia Country