Ankerites and Chalybites from the Northern Pennine Orefield and the North-East Coalfield

J. A. Smythe and K. C. Dunham¹

¹By permission of the Director, Geological Survey and Museum.

Mineralogical Magazine; June 1947 v. 28; no. 197; p. 53-74; DOI: 10.1180/minmag.1947.028.197.01
© 1947, The Mineralogical Society
Mineralogical Society (www.minersoc.org)