Publications
Phosphatic concretions in the Wealden of South-East England, by Kevin Taylor, published 1991 in The Proceedings of the Geologists' Association London (no. 102 issue 1, article, pp.67-70) View Online
Abstract:Phosphatic concretions are reported from several locations in the Wealden sediments of South-east England. The occurrence of such concretions in the Wealden sediments has not previously been recognised and in some cases in the past they may have been mistaken for siderite concretions. The predominant mineral in these concretions, as determined by X-ray diffraction analysis, is francolite, a hydroxy-carbonate apatite. Both primary concretions from the Weald Clay and reworked examples in the Hastings Beds have been recognised.