Applied mineral exploration methods, hydrothermal fluids, baro-acoustic decrepitation, CO2 rich fluids #
Newest Topics:

New model 216 decreptiometer

Exploration of the Mt. Boppy Au deposit, NSW

Forensic tests on soil samples

Viewpoints:

Do IOCG deposits form from CO2 fluids?

How CO2 inclusions form from aqueous fluids (UPDATED)

Understanding heterogeneous fluids : why gold is not transported in CO2-only fluids

Gold-quartz deposits form from aqueous - CO2 fluids: NOT from CO2-only fluids


Discussions why H2 analysis by mass spectrometry is wrong



News:

Gold at Okote, Ethiopia

Kalgoorlie Au data

Sangan skarn Fe deposits, Iran

Studies of 6 Pegmatite deposits

A study of the Gejiu tin mine, China


Exploration using palaeo-hydrothermal fluids

Using opaque minerals to understand ore fluids


Understanding baro-acoustic decrepitation.

An introduction to fluid inclusions and mineral exploration applications.



 Interesting Conferences:

-----2021-----

SGA, (Rotorua NZ), FULLY VIRTUAL march 28-31 2022
-----2022-----
6th Archean, Perth, W.Aust. RESCHEDULED unknown date 2022


Comprehensive Geology Conference Calendar


Software used in Baro-acoustic decrepitation presentation and interpretation.

Although geology and mathematics are often uncomfortable partners, the baro-acoustic decrepitation data benefits greatly from graphical presentation software and some statistical methods. All of the interpretation is done on a Linux system, running the OpenSuse linux operating system, but the "colour" of linux (or even the operating system type) is largely unimportant. The main programs used are:
With the added python module, Scidavis was used for the first of the deconvolution plots. It does work, but can be tricky to drive and is critically dependent on the start parameters. The default start parameters fail to lead to convergence, so fitting must be done manually to allow more appropriate starting parameters to be set. In addition, it will by default allow the component populations to go negative, which is  unrealistic. This behavior has to be stopped with appropriate choice of settings before the curve fit is started. Normally, the inbuilt "automatic-fit" option automatically plots the individual component curves and the fitted curve as well as the original data curve. But when using manual fitting, the system no longer plots the component curves. Additional python code was written to read in the curve parameters and add these component curves to the final plot. This scripting also allows automated title and legend addition so the plots are of presentation standard. Although the software does eventually perform reliable and realistic curve fits, it is hard to drive and sometimes requires numerous attempts.  Scidavis was used for the curve fitting interpretation of the Brusson mine, Italy and the Malanjkhand mine, India. A much more convenient curve fitting program was subsequently found - fityk (see below).