Vol. 1, Issue 10 (2016)
Ree composition of dolostone and its implications on lead mineralization, Bandalamottu, Guntur District, Andhra Pradesh
Author(s): Latha Asoori, Pavanaguru R
Abstract: Bandalamottu Pb-deposit located at the northeastern part of the Cuddapah Basin constitutes potential base metal deposit mainly composed of lead followed by zinc and copper. The host dolostone constitutes part of Cumbum Formation. REE abundances of 12 dolostones (6 mineralized and 6 barren) were analyzed by NAA. The results indicate that the REE content of dolomites were not governed by local sources, but rather from a much bigger reservoir like seawater. Normalizing patterns of dolostone with NASC values show the same general trend for all implying that the REE content is independent of mineralization. The study of REE in dolostones and related hydrotherms appear to be potential sources for both syngenetic and epigenetic Pb-Zn mineralization in suitable litho-structural sites in the equivalent middle Proterozoic sediments which is very well corroborated in Bandalamottu area.