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


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


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:


ECROFI Iceland
     July 2-6

AOGS Singapore
    30 Jul - 4 Aug 2023

SGA Zurich Aug 2023

Comprehensive Geology Conference Calendar

Additional data about how many  fluid inclusions in a sample actually decrepitate on heating?

In the previous discussion, only one of the 4 samples studied was described. The full data for all 4 samples is presented here.

All of the samples were collected from the Pine Creek region, 200 Km south of Darwin, NT, Australia. This region has been an area of minor gold production since the mid 1800's.

PCB4 contains CO2 rich fluid inclusions and has quite intense decrepitation.

pcb4 - microphoto

pcb4 cumfreq plot

PCB5 contains essentially no CO2 rich fluid inclusions.

pcb5 microphoto

pcb5 cumfreq plot

PCE3 contains a small number of gas rich CO2 fluid inclusions.

pce3 cumfreq plot

PCE15 contains no CO2 rich fluid inclusions.

pce15 cumfreq plot

Back to the fluid inclusion abundance discussion