- Gold-quartz deposits do NOT form from CO2-only fluids: Heterogeneous fluid inclusion trapping is everywhere
An example of fluid cooling across the immiscibility solvus showing why such heterogeneous fluids are misidentified and how they form CO2-only inclusions from aqueous parent fluids. K. Burlinson, April 2018.
- Gold deposition from heterogeneous aqueous, CO2-rich fluids: resolving the enigmatic and misleading hypothesis of deposition from CO2 only fluids.
An explanation of the presence of CO2 fluid inclusions in heterogeneous dominantly aqueous fluid systems. The gold and silica are not transported in the CO2 fluid because it is a minor component of the dominantly aqueous system.
Research by Liu et.al. shows a negative correlation between gold solubility and CO2 content in fluids. This confirms other discussions below which point out that mis-interpretation of heterogeneous fluids is the real explanation of anhydrous CO2 fluid inclusions found in some gold deposits.
Boiling epithermal fluid systems and immiscible CO2 - aqueous fluid systems are both heterogeneous fluids, but they are very different and must be interpreted differently.
By: Kingsley Burlinson, November 2014
Inclusion morphology can indicate that gas filled inclusions must have formed as bubbles within a liquid rather than being trapped from a purely gas host phase fluid.
By: Kingsley Burlinson, June 2014
A discussion disputing published work which wrongly claims to prove that gold is transported in pure CO2 fluids. By: Kingsley Burlinson, September 2013
A discussion disputing the transport of gold in pure CO2 fluids By: Kingsley Burlinson, September 2011
By: Kingsley Burlinson, July 2012
By: Kingsley Burlinson, April 2013
Hydrogen analyses reported from the Maw zone, Athabasca, Canada by Rabiei et. al. 2017.
A discussion of the serious errors in analysis of hydrogen within fluid inclusions by mass spectrometry.
By: Kingsley Burlinson, September 2013
Studies of IOCG deposits almost invariably observe fluid inclusions within the quartz gangue minerals to determine the nature of the ore fluids. But many studies infer the presence of multiple fluid events and Cu stable isotope studies have shown that the ore and gangue minerals of epithermal deposits do not form from the same fluid. The assertion of formation of these Fe-oxide deposits from CO2 rich fluids is tenuous at best.
By: Kingsley Burlinson, June 2016
Fluid inclusion information is particularly useful in exploration for porphyry copper deposits, but was completely ignored during exploration at the Cadia mine, NSW, Australia.
By: Kingsley Burlinson, May 2012