Limonite from selected localities.
UK | |
| Ford, T.D. (1965): Palaeontology 8(1), 186-191 |
Worley, N.E. (1978): Stratigraphical Control of Mineralisation in the Peak District of Derbyshire. PhD Thesis, University of Leicester | |
Quirk, D.G. (1986): Bulletin of the Peak District Mines Historical Society 9(6), 333-386 |