- Hydrothermal: mesothermal polymetallic veins
- Clogau Mine, Bontddu, Gwynedd: occurs intimately intergrown with tellurobismuthite and galena plus minor hessite, in association with gold and electrum. Aleksite, altaite and pilsenite are sometimes associated (Gilbey, 1968; Naden, 1988; Mason et al., 2002). Due to the association with 'gold-ore', the telluride-bearing material was picked and milled, so that only traces now occur on the tips. A suite of hand specimens rich in visible tellurides, recovered during previous episodes of mining, is preserved along with several polished sections in the collection of the National Museum of Wales.
There are no key localities for this specimen.
- Andrew, A.R., 1910. The geology of the Dolgelley gold-belt, North Wales. Geological Magazine, 47, 159-171, 201-221, 261-271.
- Forbes, D., 1868. Researches in British Mineralogy. The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science, 35, 171-184.
- Gilbey, J.W., 1968. The mineralogy, paragenesis and structure of the ores of the Dolgellau Gold Belt, Merionethshire, and associated wall rock alteration. Unpublished Ph.D thesis, University of London, UK.
- Kingsbury, A.W.G., 1965. Tellurbismuth and meneghinite, two minerals new to Britain. Mineralogical Magazine, 35, 424-426.
- Mason, J.S., Bevins, R.E. & Alderton, D.H.M., 2002. Ore Mineralogy of the mesothermal gold lodes of the Dolgellau Gold Belt, North Wales. Transactions of the Institution of Mining and Metallurgy (Section B, Applied earth science), 111, B203-B214.
- Naden, J., 1988. Gold mineralisation in the Caledonides of the British Isles with reference to the Dolgellau Gold Belt and the Southern Uplands of Scotland. Unpublished Ph.D thesis, University of Aston, UK.
- Readwin, T.A., 1888. Gold in Wales. London, 12pp.
- Smyth, W.W., 1862. Gold mining at Clogau, North Wales. Mining and Smelting Magazine, 1, 359-366.
There are no references for this specimen.