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Mt Bonnie Mine, Grove Hill, Victoria-Daly Region, Northern Territory, Australia

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Latitude & Longitude (WGS84): 13° 32' 38'' South , 131° 33' 8'' East
Latitude & Longitude (decimal): -13.54397,131.55221
Köppen climate type:Aw : Tropical savanna, wet

A small abandoned copper-lead-zinc-gold mine about 44km NW of Pine Creek.
It is a polymetallic massive sulphide deposits with mineralization including gold, silver, lead, zinc and copper. The deposits are developed within a folded Proterozoic sedimentary sequence. The mineralization occurs within lodes oriented in a north-south direction steeply dipping at approximately 70° to the east.

Located approximately 44 kms north-west of Pine Creek and 140 kms south-southeast from Darwin.

Mt Bonnie was first discovered in the early 1900s and was developed as an underground mine between 1912 and 1916. It was then dormant until 1973 when Geopeko drilled the property. Geopeko completed a historical resource estimate of 480,000 tonnes at a grade of 1.5 g/t gold, 186 g/t silver, 7.7% zinc, 1.8% lead and 0.4% copper.

NOTE: transparent "hedyphane" crystals from "Beltana" have been sold at mineral shows, but these crystals look like mimetite from the Mt. Bonnie mine (comm. Peter Elliott; see also discussion in

Mineral List

Mineral list contains entries from the region specified including sub-localities

29 valid minerals.

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

1800 - 2050 Ma

ID: 909442
Mount Bonnie Formation

Age: Orosirian (1800 - 2050 Ma)

Stratigraphic Name: Mount Bonnie Formation

Description: Interbedded carbonaceous sericitic and commonly pyritic or chloritic slate, phyllite, mudstone and siltstone; fine to coarse feldspathic metagreywacke; ferruginous phyllite (metasiltstone) with chert bands, lenses and nodules

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]

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

Localities in this Region

  • Northern Territory

This page contains all mineral locality references listed on 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 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.


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England, B. M., & Robinson, N. (1988). Mimetite and duftite from the Mount Bonnie mine, Northern Territory. Mineralogical Record, 19, 441-50.

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