Search CRC LEME :

powered by FreeFind

Publication Policy

Open File Report Series

OFRS Index


Regolith Maps

Annual Reports

Articles & Papers


Minerals Briefs

"Focus on Salt"

Other LEME Reports

Order Form

Open File Report 6

Morphology and geochemistry of gold in a laterite profile, Beasley Creek, Laverton, Western Australia

Freyssinet, P. and Butt, C.R.M.

The morphology and geochemistry of gold grains was studied in panned concentrates from several depths in the weathering profile of gold mineralization at Beasley Creek, near Laverton. At 70-80 m depth, the mineralization is only partly weathered and both primary and secondary gold grains are present. The former are characterised by high Ag contents (maximum 48%), whereas the secondary gold is of high fineness. Above 60 m, only secondary grains were found, but with several morphological types, including flat polygonal forms, euhedral prismatic crystals and pseudohexagonal crystals. Most of the grains are etched and corroded. Above 20 m, a further generation of secondary gold appears, as irregular rounded grains that are only weakly corroded. No trace elements were detected in the primary gold, but Fe and As are present sporadically in the secondary grains, probably as micro-inclusions of Fe oxides.

Last updated: Tuesday, January 04, 2000 10:11 AM


Cooperative Research Centres Australia

About Us | News & Events | Research
Publications | Education | Staff Only | Links

Contact Us | Disclaimer | Sitemap
© CRC LEME 2004

CRC LEME is established and supported under the Australian Government's Cooperative Research Centres Program. The CRC Program is an Australian Government initiative which brings together research groups with common interests.

CRC LEME Core Parties