Gold Mineralization Discovery in Umm Saqata- Qala En Nalal areas, Gadarif State-Estern Sudan

Abstract

A low density stream sediments survey has been conducted in Umm Saqata-Qala En Nahal area, Gadarif State — Eastern Sudan. The aim of the study is to explore for gold and ‘associated elements using a cost and time efl‘ective exploration method, in a low grade none explored Pan- African volcano—sedimentary greenstone belt. An orientational study has been conducted to determine- the optimum fiaetion (grain size) for Sampling in a rich Savana zone. About 12 samples have been collected from a mineralized locality and sieved for -125 pm and — 63 Both of the fractions have been analyzed for gold using wet chemical technique with detection limit 2 ppb. Tiace elements have been detennined using Aque- regia- ICP technique. ' Concentrations of gold mineralization and associated elements are typically found in the finest grain size fiaction (-63 pm). i As it is the first time to conduct such survey in the study area a number of gold anomalies have been recorded Afier selecting the right fraction, the Umm Saqata - Qala En Nahal area has been fully geochernically surveyed at a density of 1 sample per l0 Kmz