- Supergene: post-mining oxidation & weathering deposits
- Brynyrarian Mine, Tre-Taliesin, Ceredigion: noted associated with very rare ramsbeckite (Rust, 1992).
- Copa Hill, Cwmystwyth mines, Ceredigion: noted as confirmed from Copa Hill by the Natural History Museum, London (Bevins, 1994).
- Dylife Mine, Penegoes, Powys: forms pearly turquoise blue-green crusts coating weathered sphalerite derived from dumps on the outcrop of Pen Dylife Lode close to Dylife Shaft.
- Eaglebrook (Nantycagl) Mine, Ceulanymaesmawr, Ceredigion: bright blue-green, slightly twisted hexagonal crystals in rosettes covering areas to 4 mm are reported in the British Micromount Society Newsletter (No. 22).
- Frongoch Mine, Devil's Bridge, Ceredigion: occurs as light blue-green rosettes of thin platy crystals to 0.7 mm, and as drusy crusts within weathered veinstone (Green et al., 1996).
- Henfwlch Mine, Ceulanymaesmawr, Ceredigion: occurs as an uncommon mineral at this locality. Schulenbergite forms bright turquoise blue-green to pale blue aggregates of confused, twisted crystals intimately associated with serpierite within low-grade sulphide ore used as backfill underground (T.F. Cotterell, unpublished data).
- Llangynog Mine, Llangynog, Powys: crystal groups, up to 2 mm across, occur on a specimen in the S.A. Rust Collection.
- Penrhiw Mine, Ystumtuen, Ceredigion: relatively common as extensive pale blue poorly-crystalline coatings on the external surfaces of siltstone-dolomite blocks. Crystals, typically pseudohexagonal in form are often intergrown into rosettes. Crystals reach 1.5 mm but, are more usually 0.5 to 1 mm in size (Mason & Green, 1995). Specimens from Penrhiw are the richest from Wales in terms of coverage.
- Ystrad Einion Mine, Furnace, Ceredigion: crusts of near-white hexagonal platy crystals (up to 0.75 mm) associated with minor serpierite are known from underground workings (Mason & Rust, 1997).
- Bevins, R.E., 1994. A Mineralogy of Wales National Museum of Wales, Geological Series No. 16, Cardiff, 146pp.
- Green, D.I., Rust, S.A. & Mason, J.S., 1996. Classic British mineral localities: Frongoch Mine, Dyfed. UK Journal of Mines & Minerals, 17, 29-38.
- Hodenberg, R. von, Krause, W. & Tauber, H., 1984. Schulenbergite, (Cu,Zn)7(SO4,CO3)2(OH)10.3H2O a new mineral. Neues Jahrbuch fur Mineralogie Monatschefte, 17-24.
- Mason, J.S. & Green, D.I., 1995. Supergene minerals including exceptional ramsbeckite from Penrhiw Mine, Ystumtuen, Dyfed. UK Journal of Mines & Minerals, 15, 21-27.
- Mason, J.S. & Rust, S.A., 1997. The Mineralogy of Ystrad Einion Mine, Dyfed, Wales. U.K. Journal of Mines and Minerals, 18, 33-36.
- Rust, S.A., 1992. Ramsbeckite, the first three British occurrences. U.K. Journal of Mines and Minerals, No. 11, 24-25.