Heulandite Subgroup from
UK | |
| Russell, A. (1910): Mineralogical Magazine 15, 377-384 |
| J. Russell Socierty 2006, 68-71 |
(n.d.) | |
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
Carrack Dews Mine, St Ives, Cornwall, England, UK