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Adamsfield, Derwent Valley municipality, Tasmania, Australia

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Latitude & Longitude (WGS84): 42° 43' 22'' South , 146° 20' 14'' East
Latitude & Longitude (decimal): -42.72292, 146.3375

The site of an isolated settlement, now reclaimed by dense bush, serving the surrounding "osmiridium" field, near Lake Pedder, south-western Tasmania. It was once one of the world's major producers of this rare metal, but little can be found there now. The "osmiridium" (mixtures of Os-Ir-Ru alloys) was mostly recovered from shallow alluvial workings; the hard-rock sources in associated serpentinites are largely untested. Harris and Cabri (1991) redefined the classification of the Os-Ir-Ru alloys to the elemental end-members (iridium, osmium and ruthenium, q.v.) plus rutheniridosmine (for structural reasons).

Mineral List

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

9 valid minerals.

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Cabri L.J., & Harris, D. (1975). Zoning in OS-IR Alloys and the Relation of the Geogical and Tectonic Environment of the Source Rocks to the Bulk Pt: Pt+Ir+Os Ratio for Placers. Canadian Mineralogist, 13, 266-274.

Bottrill, R. S.; (1989), Economic Geology Appendix A; Tasmanian Geol. Surv. Explanatory Rept. 73 ( Huntley.)

Bacon, C. A. (1992). Notes on the History of Mining and Exploration at Adamsfield. Mineral Resources Tasmania.

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