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Gold/Mining/Energy : International Precious Metals (IPMCF) -- Ignore unavailable to you. Want to Upgrade?

To: Walt Holberg who wrote (29494)	12/24/1997 4:09:00 PM
From: Brander	Respond to of 35569

Sounds wonderful Walt. If you turn anything up about the wet nodules, please let me know. I think this is facinating. Cheers, Brad

To: Walt Holberg who wrote (29494)	12/24/1997 5:53:00 PM
From: Chuca Marsh	Read Replies (2) \| Respond to of 35569

Brad and Walt ( and Michael V.<posted prior on MGAU> & and C.L. who found this site -I am certain!)Here is that facts and figures with pictures: syd.dem.csiro.au syd.dem.csiro.au Sampling medium After investigation of several plant species, a small- to moderate-size tree species (Astronidium palauense) was chosen for sampling because it is abundant and has a widespread distribution. As a biogeochemical survey medium, A. palauense has the following desirable characteristics: it is easy to identify and is well known to indigenous peoples; its bark is plentiful and easy to obtain; the ashed bark reliably indicates gold concentrations in the substrate. Arsenic, too, can be used in combination with gold to ascertain the strength of the anomaly; the root system reaches at least 4 m depth, allowing greater penetration than surface soil samples. This is particularly important in volcanic terranes where geochemical targets are buried by post-mineralization volcanic eruption or debris flows; the areal distribution of the root system (up to 5 m radius) samples a large volume of soil (ca. 100 m3), which effectively eliminates the nugget effect. ( I put this in because I have been know to inspect anthills) Gold IS where you find it.Chucastatement.) syd.dem.csiro.au A decrease in temperature as the hydrothermal fluid passes from the warm volcanic pile through fractures to the cooler volcanic rocks flanks, or mixes with ambient seawater will cause a significant decrease in gold solubility, and therefore gold deposition.Intergrown sulfide-sulfate mineral assemblages indicate that the redox state is buffered and unlikely to be a factor in gold deposition. Increasing fluid acidity would also precipitate gold but this too is an unlikely event in a seawater-dominated submarine environment. Boiling is not likely to be involved in gold deposition because of the combination of water depth (1250m) and low temperature (<250øC). Presented at Western Pacific AGU Meeting, Brisbane, July 26th, 1996 Reference: McInnes, B.I.A., Herzing, P.M. and Hannington, M. 1996. Gold deposition mechanisms in submarine arc volcanoes near Lihir Island, Papua New Guinea. EOS v.77, no. 22, p.118. Chuca(Merry To All!!! !)