- 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.
- 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 Unpublished Ph.D thesis, University of London, UK.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 Unpublished Ph.D thesis, University of Aston, UK.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.