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Mount Shadwell, Mortlake, Moyne Shire, Victoria, Australia

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Latitude & Longitude (WGS84): 38° 3' 4'' South , 142° 49' 0'' East
Latitude & Longitude (decimal): -38.05111,142.81667


Active basalt quarry at base of eastern flank of the volcano.
Known for fine olivine bombs and large anorthoclase xenocrysts.
Fumaroles and quartz-rich xenoliths also occur, but are rare.
The mineralogy has not been studied in detail yet, but mineralogical work is underway (B. Birch & U. Kolitsch).


Mt Shadwell Quarry is located in Ararat Road, MORTLAKE.

Mineral List


15 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 Macrostrat.org

Holocene - Miocene
0 - 23.03 Ma
Newer Volcanic Group

Age: Cenozoic (0 - 23.03 Ma)

Stratigraphic Name: Newer Volcanic Group

Description: Cinder cones - scoria, minor ash and agglutinates; Lava flows - tholeiitic to minor alkaline and basanitic lavas.

Comments: igneous mafic volcanic; synthesis of multiple published descriptions

Lithology: Igneous mafic volcanic

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 Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

- Ollier & Joyce (1964)
- Irving (1974)
- Birch, W. D., Wood, A., White, A. J. R., Mills, S. J. and Freeman, R. (2008): Aegirine-augite crystals in scoria from Mt Shadwell and Mt Anakie, Victoria, Australia. Australian Journal of Mineralogy 14, 37-42.
- Mills, S. J. & Groat, L. A. (2008) The crystal structure of yellow aegirine–augite from Mount Anakie, Victoria, Australian Journal of Mineralogy, 14(1), 43–45.

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