Summary: The top 2 inches of the Lower Magnesian Limestone is feebly but persistently mineralized along its outcrop from Nottingham to Doncaster, predominantly with galena and a little cerussite, frequently with uraniferous asphaltite containing 0·2 to 1% U3O8. Wulfenite, both platy and pyramidal in habit, occurs at Bulwell and Kirkby in Ashfield. The mode of formation and the age of these minerals are discussed.
Mineralogical Magazine; March 1961 v. 32; no. 252; p. 705-715; DOI: 10.1180/minmag.1961.032.252.04
© 1961, The Mineralogical Society
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