Abstract
Detailed geochemical surveys were conducted near the Igarape Bahia lateritic gold deposit in 1990-91 to extend and verify a preliminary survey made in 1988. Water and vegetation samples were analyzed for gold to determine the utility of these media for geochemical exploration purposes. It was shown that routine hydrogeochemical and vegetation sampling are not reliable indicators of gold mineralization. Much of the total gold in the surficial soils (to 3m depth) is extractable with 30% hydrogen peroxide and this fraction is believed to represent gold associated with organic matter. The organically-associated gold may be mobile during the lateritic weathering process and could help account for lateral dispersion and enrichment of gold in certain horizons which are characteristic of many lateritic gold deposits. -from Authors
Original language | English (US) |
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Pages (from-to) | 53-60 |
Number of pages | 8 |
Journal | Chronique de la Recherche Miniere |
Volume | 510 |
State | Published - 1993 |
Externally published | Yes |
ASJC Scopus subject areas
- General Environmental Science
- General Earth and Planetary Sciences