Bronco Gold Mine, Marvel Loch, Yilgarn Shire, Western Australia, Australiai
| Regional Level Types | |
|---|---|
| Bronco Gold Mine | Mine |
| Marvel Loch | Loch |
| Yilgarn Shire | Shire |
| Western Australia | State |
| Australia | Country |
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Latitude & Longitude (WGS84):
31° 33' 0'' South , 119° 33' 45'' East
Latitude & Longitude (decimal):
Locality type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Mount Palmer | 117 (2014) | 19.6km |
| Southern Cross | 712 (2012) | 42.5km |
| Moorine Rock | 189 (2013) | 48.6km |
The mine is 15 kilometres south-east of Marvel Loch, in an area known as Burbidge, named after an early mining pioneer in the area. During the 1980's, Sons of Gwalia Ltd developed a series of small pits 50-80 metres deep over a 7 kilometre strike. Total production from all the pits was 450 Kt at 1.6 g/t yielding 27 Koz.
The mine is about 500 metres west of the large Great Victoria pit. The pit is less than 100 metres south-west of the Brumby pit, and less than 100 metres north-east of the Bronco South pit. It appears the Bronco pit has been filled in with waste rock from neighbouring operations at the time of writing. Some of the nine pits in this area are modern developments, while others like Bronco were over old historic shafts.
The main mine at the location was the Bronco Horseshoe, while neighbouring Bronco Links had a less extensive history. Mine maps also list Bravo as a modern name at some point for the location.
The first report found of crushings was 1914, by the Bronco Horseshoe Proprietary Company led by well known mining identity A.E. Morgans. However by the end of the year, the Bronco Horseshoe was under exemption. Bronco Horseshoe appears to go through several ownerships.
It was being mined by tributers in 1915 and 1916, as Turner, Mooney, Cummings and Corrigan (surnames). The Mararoa Company had an option over the mine in 1917, and is erecting condensers, a winding winch and boilers. In 1920, it is reported the Bronco Horseshoe syndicate has been reconstructed and the mine is operational again. The lease was forfeited in 1924. The lease was 120 acres on a large low grade lode.
The mine next springs to life in 1934, as the Prince George, employing 30 men. This was under the Marvel Loch Gold Mining Company, but by 1939 it is owned by Anglo Australian and General Investment Trust Limited, who are applying for an exemption over the mine.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
4 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| β 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 Reference: Simpson, E.S. (1948), Minerals of Western Australia, Vol 1, p 227 (spelt Broncho in Simpson) |
| β Calcite Formula: CaCO3 Reference: Simpson, E.S. (1948), Minerals of Western Australia , Vol 2., p146 (spelt Broncho in Simpson) |
| β Diopside Formula: CaMgSi2O6 Reference: Simpson, E.S. (1948), Minerals of Western Australia, Vol 1, p 227 (spelt Broncho in Simpson) |
| β 'Feldspar Group' Reference: Simpson, E.S. (1948), Minerals of Western Australia, Vol 1, p 227 (spelt Broncho in Simpson) |
| β Gold Formula: Au Reference: Kalgoorlie Miner newspaper (1916), Bronco Horseshoe G.M., 12/02/1916 |
| β 'Hornblende' Reference: Simpson, E.S. (1948), Minerals of Western Australia, Vol 1, p 227 (spelt Broncho in Simpson) |
| β 'Mica Group' Reference: Simpson, E.S. (1948), Minerals of Western Australia , Vol 2., p146 (spelt Broncho in Simpson) |
| β Quartz Formula: SiO2 Reference: Simpson, E.S. (1948), Minerals of Western Australia, Vol 1, p 227 (spelt Broncho in Simpson) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
| Group 9 - Silicates | |||
| β | Diopside | 9.DA.15 | CaMgSi2O6 |
| Unclassified Minerals, Rocks, etc. | |||
| β | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| β | 'Feldspar Group' | - | |
| β | 'Hornblende' | - | |
| β | 'Mica Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| C | Carbon | |
| C | β Calcite | CaCO3 |
| O | Oxygen | |
| O | β Quartz | SiO2 |
| O | β Diopside | CaMgSi2O6 |
| O | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| O | β Calcite | CaCO3 |
| F | Fluorine | |
| F | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Mg | Magnesium | |
| Mg | β Diopside | CaMgSi2O6 |
| Mg | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Al | Aluminium | |
| Al | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| Si | β Diopside | CaMgSi2O6 |
| Si | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| K | Potassium | |
| K | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Ca | Calcium | |
| Ca | β Diopside | CaMgSi2O6 |
| Ca | β Calcite | CaCO3 |
| Ti | Titanium | |
| Ti | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Fe | Iron | |
| Fe | β Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 |
| Au | Gold | |
| Au | β Gold | Au |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Western Mail newspaper (Perth) (1914) Marvel Loch, 04/12/1914.
The Daily News newspaper (Perth) (1920) Marvel Loch, 21/06/1920.
Kalgoorlie Miner newspaper (1916) Bronco Horseshoe G.M., 12/02/1916.
Western Argus newspaper (Perth) (1917) Marvel Loch, 03/04/1917.
Kalgoorlie Western Argus newspaper (1914) Bronco Horseshoe Proprietary, 14/04/1914.
Sunday Times newspaper (Perth) (1935) News from Mines, 03/11/1935.
Mirror newspaper (Perth) (1935) Burbidge Prospects, 14/09/1935.
Sunday Times newspaper (Perth) (1916) Mining and Finance, 09/07/1916.
The Southern Cross Times newspaper (1939) Warden's Court, 18/03/1939.
The West Australian newspaper (Perth) (1924) Yilgarn Goldfield, 29/07/1924.
St Barbara Limited (2010) Annual Report, 2010.
Other Regions, Features and Areas containing this locality
Australia
- Western Australia
- Forrestania Nickel Metallogenic ProvinceGeologic Province
- West Australian ElementCraton
- Yilgarn CratonCraton
Australian PlateTectonic Plate
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