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

Application of acoustic fluid inclusion decrepitometry to gold exploration in Finland

Sami A. G. Partamies & Matti A. J. Poutiainen

Geochemistry: Exploration environment Analysis, Vol 1 2001, pp 109-117

Acoustic fluid inclusion decrepitometry was applied to five Archean and 14 palaeoproterozoic gold deposits in order to evaluate the applicability of the method in gold (Au) exploration. The sample material consists mostly of Au-sulphide bearing and barren quartz veins. The deposits are characterized by decrepigrams and fluid inclusion geochemistry. The decrepigrams exhibit different regional characteristics for the different domains but within these domains or single ore provinces they are usually very uniform and coherent.

The decrepigrams of mineralized and barren quartz veins show recognizable differences in their discrimination in areas where this can rarely be discerned by mere visual observation. Furthermore, the highest concentration of Au usually correlates with the peak frequency of gaseous (CO2 and CH4) fluid inclusions which decrepitate at temperatures below 350 C, and with the highest amount of other fluid inclusion types (H2O-CO2 +/- CH4 and H2O), which decrepitate over a wide range at temperatures above 350 C. These results show that careful collection and assessment of decrepitation data may play a small but constructive role in Au exploration.

 Back to bibliography

 Back to main Contents