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Kong Mine North Workings (Webbs Mica Mine No. 1), Kong Bore Area, Mt Riddock Station, Harts Range (Harts Ranges; Hartz Range; Hartz Ranges), Central Desert Region, Northern Territory, Australia

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Latitude & Longitude (WGS84): 23° 2' 44'' South , 134° 37' 6'' East
Latitude & Longitude (decimal): -23.04579,134.61850
Köppen climate type:BWh : Hot deserts climate

Located 100 yards south-east of the Kong Bore, and 500 yards north of the Kong Bore South Workings. There are two shafts, the northern one down to 100 feet depth, with one drive, and the southern shaft also 100 feet depth, with a drive at the 70 foot level, and another at the 100 foot level.

The pegmatite dips steeply west, with a thick quartz core, and zone of fine grained quartz, weathered feldspar, and muscovite. There was (is) abundant clear mica at the mine, although much was bent and unsaleable. The Hanging Wall is poorly defined with the pegmatite impregnating the country rock for at least 40 feet. There is much kaolin in the upper levels, and the shafts could be collapsed. Apart from large hornblende pieces, massive epidote in quartz and feldspar is occasionally found, and schorl crystals near the pegmatite. Small rutile crystals are reported in the area, by sieving dump material.

The Webbs established Mt. Riddock Station. They had arrived at the Arltunga Goldfield in 1902, and while finding some gold, decided more money could be made supplying the miners with meat. Over the years they continued to dabble in local mining. The station was established by Benjamin Mark Webb, and Joseph Louis Schaber, with the homestead built in 1910. Webb's three sons, Bennett, Qinton, and Kil, and Schaber's son Roy then took over. They are credited with establishing the annual Harts Ranges Races at Atitjere in 1946. The station was purchased by Dick and Ann Cadzow in 1986.

Commodity List

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

Mineral List

5 valid minerals.

Rock Types Recorded

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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.

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Series 2 - Terreneuvian
509 - 541 Ma

ID: 706201
Irindina Gneiss

Age: Cambrian (509 - 541 Ma)

Stratigraphic Name: Irindina Gneiss

Description: Schistose garnet-biotite gneiss; sillimanite gneiss; amphibolite; biotite gneiss

Comments: high grade metamorphic rock; synthesis of multiple published descriptions

Lithology: High grade metamorphic rock

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

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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Rochow, K. (1962) An Investigation of the Harts Range and Plenty River Mica Mines, Bureau of Mineral Resources, Geology and Geophysics, Commonwealth of Australia, Record 1962/34.
Chronicle newspaper (Adelaide) (1902) The Arltunga Goldfield. Gold and Mica. A Hopeful Outlook, 04/01/1902.
Old Station Well Fossicking Area FA10 Map.
Thompson, D. (ed) (1986) A Guide to Fossicking in the Northern Territory. Northern Territory Geological Survey, Northern Territory Department of Mines and Energy, 2nd ed., 73p.

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