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Duckmaloi river mine, Oberon, Westmoreland Co., New South Wales, Australia

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Latitude & Longitude (WGS84): 33° 51' 3'' South , 149° 54' 45'' East
Latitude & Longitude (decimal): -33.85083,149.91250
GeoHash:G#: r3fx7mduw
Locality type:Mine
Köppen climate type:Cfb : Temperate oceanic climate


The Duckmaloi skarn deposit was formed by the contact of dirty limestone (marl?) of Silurian age with the adjacent Duckmaloi granite stock. The skarn is predominately made up of massive garnet. Opaque brown garnet crystals have been found in cavities with epidote. The garnets are zoned, having a composition of grossular in the centre and andradite towards the outside. The crystals generally have a good luster but sometimes can be eroded on the inside leaving a hollow a box work. Shattered garnet embedded in the centre of masses of radiating wollastonite has also been found.

The area underwent small scale mining for calcite and bismuth minerals with limited success.

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

Duckmaloi River, Oberon, Westmoreland Co., NSW

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

Andradite
Formula: Ca3Fe3+2(SiO4)3
Reference: www.amonline.net.au/geoscience/minerals/localities.htm
Grossular
Formula: Ca3Al2(SiO4)3
Reference: www.amonline.net.au/geoscience/minerals/localities.htm
Vesuvianite
Formula: (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Reference: www.amonline.net.au/geoscience/minerals/localities.htm
Wollastonite
Formula: CaSiO3
Reference: www.amonline.net.au/geoscience/minerals/localities.htm

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
'Andradite'9.AD.25Ca3Fe3+2(SiO4)3
'Grossular'9.AD.25Ca3Al2(SiO4)3
'Vesuvianite'9.BG.35(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
'Wollastonite'9.DG.05CaSiO3

List of minerals arranged by Dana 8th Edition classification

Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Andradite51.4.3b.1Ca3Fe3+2(SiO4)3
Grossular51.4.3b.2Ca3Al2(SiO4)3
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Vesuvianite58.2.4.1(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=3
Wollastonite65.2.1.1cCaSiO3

List of minerals for each chemical element

HHydrogen
H Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
BBoron
B Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
OOxygen
O AndraditeCa3Fe23+(SiO4)3
O GrossularCa3Al2(SiO4)3
O Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
O WollastoniteCaSiO3
FFluorine
F Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
NaSodium
Na Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
MgMagnesium
Mg Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
AlAluminium
Al GrossularCa3Al2(SiO4)3
Al Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
SiSilicon
Si AndraditeCa3Fe23+(SiO4)3
Si GrossularCa3Al2(SiO4)3
Si Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Si WollastoniteCaSiO3
CaCalcium
Ca AndraditeCa3Fe23+(SiO4)3
Ca GrossularCa3Al2(SiO4)3
Ca Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Ca WollastoniteCaSiO3
FeIron
Fe AndraditeCa3Fe23+(SiO4)3
Fe Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10

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

Late Ordovician - Early Ordovician
443.8 - 485.4 Ma



ID: 926238
Adaminaby Group

Age: Ordovician (443.8 - 485.4 Ma)

Stratigraphic Name: Adaminaby Group

Description: Turbiditic sequence of sandstone, mudstone, shale, carbonaceous shale, greywacke; chert, quartzite, phyllite, slate.

Comments: sedimentary siliciclastic; synthesis of multiple published descriptions

Lithology: Sedimentary 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]

Ordovician
443.8 - 485.4 Ma



ID: 3186279
Paleozoic sedimentary and volcanic rocks

Age: Ordovician (443.8 - 485.4 Ma)

Comments: Lachlan Fold Belt

Lithology: Intermediate-felsic volcanic rocks; sandstone,phyllite,conglomerate,slate,chert,siltstone

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

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Mark Rheinberger
- www.amonline.net.au/geoscience/minerals/localities.htm


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