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Ireland's Garnet Mine, Thackaringa District, Yancowinna Co., New South Wales, Australiai
Regional Level Types
Ireland's Garnet MineMine
Thackaringa DistrictDistrict
Yancowinna Co.County
New South WalesState
AustraliaCountry

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Latitude & Longitude (WGS84): 32° 3' 19'' South , 141° 14' 11'' East
Latitude & Longitude (decimal): -32.05555,141.23639
GeoHash:G#: r4k3tumny
Locality type:Mine
Köppen climate type:BWk : Cold desert climate
Nearest Settlements:
PlacePopulationDistance
Broken Hill18,430 (2015)22.6km


Located 25 kms west-southwest of Broken Hill, 1km south of the Barrier Highway and 2.4 kms from the intersection of the Barrier Highway and the Triple Chance access road.
There was a small pit 10 metres wide by 20 metres long and 5 metres deep with euhedral almandine garnets up to 15cm across found embedded in a chloritic schist. The pit was first opened up by Alan Ireland in the 1960's and many good specimens were obtained including very large matrix pieces, over the next 40 years. The lease was passed onto his daughter when Alan died in the 1980's. In 2010, Alan's daughter sold the mining lease to Tom Kapitany of Crystal World (Melbourne) who has, after retrieving more quality specimens, pushed the dump material back into and covering the original pit. Along with the large well-formed garnets, small sharp octahedral magnetite crystals up to 6mm are found within the chloritic schists.
The chlorite schist is a retrograde shear zone cutting the local high grade felsic gneisses of mid-Proterozoic age.

Regions containing this locality

Australian Plate (Australia Plate)Tectonic Plate
Curnamona Province, AustraliaGeologic Province

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


4 valid minerals.

Detailed Mineral List:

Almandine
Formula: Fe2+3Al2(SiO4)3
Habit: Dodecahedral
Colour: Dark brownish red
Description: Large dodecahedral crystals to 100mm in schist, some gemmy zones but mostly crazed.
Reference: Dart, T. (2007) Thackaringa Garnets. The Australian and New Zealand Mineral Collector Magazine, No.2: 3-8.
Goethite
Formula: α-Fe3+O(OH)
Reference: Ryan Eagle specimen
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Trevor Dart Collection
Siderite
Formula: FeCO3
Reference: Ryan Eagle specimen

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
Siderite5.AB.05FeCO3
Group 9 - Silicates
Almandine9.AD.25Fe2+3Al2(SiO4)3

List of minerals arranged by Dana 8th Edition classification

Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Siderite14.1.1.3FeCO3
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine51.4.3a.2Fe2+3Al2(SiO4)3

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
CCarbon
C SideriteFeCO3
OOxygen
O AlmandineFe32+Al2(SiO4)3
O Goethiteα-Fe3+O(OH)
O SideriteFeCO3
O MagnetiteFe2+Fe23+O4
AlAluminium
Al AlmandineFe32+Al2(SiO4)3
SiSilicon
Si AlmandineFe32+Al2(SiO4)3
FeIron
Fe AlmandineFe32+Al2(SiO4)3
Fe Goethiteα-Fe3+O(OH)
Fe SideriteFeCO3
Fe MagnetiteFe2+Fe23+O4

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Statherian
1600 - 1800 Ma



ID: 911142
Sundown Group

Age: Statherian (1600 - 1800 Ma)

Stratigraphic Name: Sundown Group

Description: Pelitic to psammitic metasediments.

Comments: metasedimentary siliciclastic; synthesis of multiple published descriptions

Lithology: Metasedimentary siliciclastic

Reference: Raymond, O.L., Liu, S., Gallagher, R., Zhang, W., Highet, L.M. Surface Geology of Australia 1:1 million scale dataset 2012 edition. Commonwealth of Australia (Geoscience Australia). [5]

Paleoproterozoic
1600 - 2500 Ma



ID: 3184292
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Comments: Broken Hill Camp; Adelaide Fold Belt

Lithology: Quartzite; granulite grade orthogneiss/paragneiss/metavolcanic gneiss

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Dart, T. (2007) Thackaringa Garnets. The Australian and New Zealand Mineral Collector Magazine. No.2, 3-8.


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