GEOCHEMISTRY OF ROCKS AND STREAM SEDIMENT FROM GARATU AREA OF BIDA SHEET184NE, IN RELATION TO GOLD MINERALIZATION

Authors

Geology, geochemistry, rock, stream sediment, gold, enrichment factor

Stream sediment and rocks were sampled and analysed for their gold and other elemental

contents, the study area lies within longitude 006o 24′30.00″E and 006o 26′30.00″E and

latitude 09o 28′30.00″N and 09o 29′45.00″N part of Bida Sheet 184NE. The aim of the study is

to evaluating the gold and other mineralization potentials of the stream sediments and rocks.

Ten stream sediments and five rock samples were analysed, using Instrumental Neutron

Activation Analysis (INAA), Inductively Coupled Plasma (ICP) and Thermal Desorption

Mass Spectrometry (TD-MS). The study area is underlain by schist and Granite. The result of

the analyses shows gold enrichment of 140 timesand Al enrichment of12.36 and low

enrichment factors for the rest elements in the sediment, while gold enrichment in rock

sample is 69.8. From these results, only gold has shown potential mineralization within the

study area.