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GEOREF RECORD

Dispersion of gold in stream sediments in the Sungai Kuli region, Sabah, Malaysia

W. K. Fletcher and Joanes Muda
Dispersion of gold in stream sediments in the Sungai Kuli region, Sabah, Malaysia (in The 20th IGES; proceedings, Anonymous)
Geochemistry - Exploration, Environment, Analysis (February 2003) 3, Part 1: 51-56

Abstract

The distribution of Au has been investigated under tropical rainforest conditions in an Au-rich tributary of the Sungai Kuamut, Sabah, Malaysia. Paired high- and low-energy sediment samples were collected, before disturbance by logging, from gravel and cobble sites on bars and riffles. Gold content of five size fractions finer than 212 mu m was determined by fire-assay atomic absorption spectrometry (FA-AAS). Use of a bulk leach cyanidation (BLC) procedure for Au was also tested. A strong, but extremely erratic, Au anomaly is present in the sand-size fractions. The highest Au values are found in gravel environments and concentrations decrease with decreasing grain size to a minimum in the -53 mu m fraction. To maintain anomaly contrast while minimizing the chance of missing the erratic Au anomalies, use of the -105 mu m fraction is recommended for stream sediment exploration surveys in the region. Because of the abundance and low Au content of the -53 mu m fraction, increased erosion and additional inputs of this fraction into the stream after logging activity could significantly dilute the Au anomaly.


ISSN: 1467-7873
EISSN: 2041-4943
Serial Title: Geochemistry - Exploration, Environment, Analysis
Serial Volume: 3, Part 1
Title: Dispersion of gold in stream sediments in the Sungai Kuli region, Sabah, Malaysia
Title: The 20th IGES; proceedings
Author(s): Fletcher, W. K.Muda, Joanes
Author(s): Anonymous
Affiliation: University of British Columbia, Earth Ocean Sciences, Vancouver, BC, Canada
Pages: 51-56
Published: 200302
Text Language: English
Publisher: Geological Society Publishing House, London, United Kingdom
Meeting name: 20th IGES
Meeting location: Santiago, CHL, Chile
Meeting date: 20010506May 6-10, 2001
References: 13
Accession Number: 2005-016769
Categories: Economic geology, geology of ore deposits
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. 5 tables, geol. sketch map
N04°00'00" - N07°40'00", E115°00'00" - E119°30'00"
Secondary Affiliation: Minerals and Geoscience Department, MYS, Malaysia
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200507
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