Some Additional Localities for Idocrase in Cornwall1
G. Barrow and H. H. Thomas
1Communicated by permission of the Director of H.M. Geological Survey. Compare G. Barrow and H. H. Thomas, ‘On the occurrence of metamorphic minerals in calcareous rocks in the Bodmin and Camelford areas, Cornwall.’ Min. Mag., 1908, vol. xv, pp. 113–123.