| johnblanchard.net (2021) http://johnblanchard.net/index.php/some-sites/226-meldon-aplite-quarry-sssi von Knorring, O., Condliffe, E. (1984) On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine, 48(348), 443-448. McLintock, W.F.P. (1923) On the occurrence of petalite and pneumatolytic apatite in the Meldon aplite, Okehampton, Devonshire. Mineralogical Magazine, 20(103), 140-150. |