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:

-----2023-----

ECROFI Iceland
     July 2-6

AOGS Singapore
    30 Jul - 4 Aug 2023

SGA Zurich Aug 2023


Comprehensive Geology Conference Calendar


Sample information - Kalgoorlie region decrepitation samples

Kanowna Belle

H207 Sample# 1501B Kalg 94 0.5g -420+200u
coarse grained qtz, ferrug stained, flat sided 1cm thick vein
Kanowna Belle

H209 Sample# 1501C Kalgoorlie 94 0.5g -420+200u
coarse grained qtz, white, semi transl
Kanowna Belle

H210 Sample# 1501B Kalgoorlie 94 0.5g -420+200u
Kanowna Belle coarse grained qtz, ferrug. stained
rerun of h207 - rain noise

H211 Sample# 1501D Kalgoorlie 94 0.5g -420+200u
white semi transl qtz, selvage of ferrug qtz
Kanowna Belle

H212 Sample# 1502 Kalgoorlie 94 0.5g -420+200u
Very ferrug qtz vein on CR. Thin (2-5mm)
Kanowna Belle

H213 Sample# 1503A Kalgoorlie 94 0.5g -420+200u
semi transl wh coarse grained qz, tr ferrug stains
Kanowna Belle

H214 Sample# 1503B Kalgoorlie 94 0.5g -420+200u
semi transl wh coarse grained qz, with one ferruginous vug
Kanowna Belle

H215 Sample# 1503C Kalgoorlie 94 0.5g -420+200u
semi transl wh coarse grained qz, ferruginous stained
Kanowna Belle

H216 Sample# 1504A Kalgoorlie 94 0.5g -420+200u
wh coarse grained qz, very ferruginous, vein 2cm thick
Kanowna Belle

H217 Sample# 1504B Kalgoorlie 94 0.5g -420+200u
very ferruginous, qtz vein strongly sheared
Kanowna Belle

H218 Sample# 1504C Kalgoorlie 94 0.5g -420+200u
grey siliceous country rock, trace dissem very fine grain sulphides
Kanowna Belle

H219 Sample# 1504D Kalgoorlie 94 0.5g -420+200u
very ferruginous, med grained semi translucent qtz with vugs
Kanowna Belle

Mt Pleasant mine group

H220 Sample# 1505A Kalgoorlie 94 0.5g -420+200u
milky white med grained qtz
Mt. Pleasant

H221 Sample# 1505B Kalgoorlie 94 0.5g -420+200u
milky white med grained qtz
Mt. Pleasant

H222 Sample# 1505C Kalgoorlie 94 0.5g -420+200u
milky white coarse grained qtz
Mt. Pleasant

H223 Sample# 1505D Kalgoorlie 94 0.5g -420+200u
milky white coarse grained qtz
Mt. Pleasant

H637 Sample# 1507A Kalg94 0.5g -420+200u
Mt Pleasant area, Ryal Standard mine ORE - 2 splits from 1 lump sample
Milky white qtz, with scattered chlorite

H638 Sample# 1507B Kalg94 0.5g -420+200u
Mt Pleasant area, Ryal Standard mine ORE - 2 splits from 1 lump sample
Milky white qtz, with scattered chlorite

H639 Sample# 1508 Kalg94 0.5g -420+200u Acid Washed
Mt Pleasant area, Racetrack breccia
grey/beige siliceous CR breccia, trace pyrite

H640 Sample# 1509 Kalg94 0.5g -420+200u Acid Washed
Mt Pleasant area, Golden Kilometre, North South shoot, Ore
Coarse granular milky white qtz, much S=

Kalgoorlie Superpit

H600 Sample# 1538A Kal94 0.5g -420+200
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, 2cm thick, CR selvedge

H601 Sample# 1538B Kal94 0.5g -420+200
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, 1cm thick, CR selvedge

H602 Sample# 1538C Kal94 0.5g -420+200
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge , trace S=

H603 Sample# 1538D Kal94 0.5g -420+200
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge , trace S=

H604 Sample# 1538E Kal94 0.5g -420+200
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge ,3cm thick vein

H605 Sample# 1538F Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge ,1cm thick vein

H606 Sample# 1538G Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, Much CR

H607 Sample# 1538H Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge, 1cm thick, trace py

H608 Sample# 1538I Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge, 1cm thick

H609 Sample# 1538J Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge, 1cm thick

H610 Sample# 1538K Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge, 1cm thick, trace py

H611 Sample# 1538L Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge, 1cm thick

H612 Sample# 1538M Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge, 5mm thick

H613 Sample# 1538N Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, CR selvedge, 5mm thick, rusty coloured

H614 Sample# 1538P Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
1cm thick Milky wh qtz, R selvedge

H615 Sample# 1538Q Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Milky wh qtz, Massive

H616 Sample# 1539A Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Thich 10cm vein at same locn 1538, V. thin milky wh qtz (late phase within?)

H617 Sample# 1539B Kal94 0.5g -420+200 Acid Washed
Kalgoorlie superpit, North end, B lode. Many thin parallel stringer qtz veins
Thich 10cm vein at same locn 1538, grey fract. milky wh qtz

H619 Sample# 1539C Kalg94 0.5g -420+200u Acid Washed
Kalgoorlie superpit, North end, B lode, numerous thin stringer veins here
1 of 4 from a single 10cm vein, milky wh qtz, much CR inclusions

H620 Sample# 1539D Kalg94 0.5g -420+200u Acid Washed
Kalgoorlie superpit, North end, B lode, numerous thin stringer veins here
1 of 4 from a single 10cm vein, milky wh qtz, CR selvedge

H621 Sample# 1540A Kalg94 0.5g -420+200u
Kalgoorlie superpit, North end, B lode, massive quartz lode
clean coarse milky wh qtz, minor CR inclusions

H622 Sample# 1540B Kalg94 0.5g -420+200u
Kalgoorlie superpit, North end, B lode, massive quartz lode
milky wh qtz, and silicified grey CR

H623 Sample# 1540C Kalg94 0.5g -420+200u
Kalgoorlie superpit, North end, B lode, massive quartz lode
milky wh qtz, much silicified grey CR

H624 Sample# 1541A Kalg94 0.5g -420+200u Acid Washed
Kalgoorlie superpit, North end, B lode, 30 m westwards of previous samples
siliceous sulphide lode, very ferruginous, silicified greenstone??

H625 Sample# 1541B Kalg94 0.5g -420+200u
Kalgoorlie superpit, North end, B lode, 30 m westwards of previous samples
siliceous sulphide lode, very ferruginous, fault gouge

H626 Sample# 1542A Kalg94 0.5g -420+200u Acid Washed
Kalgoorlie superpit, North end, B lode, 40 m west of main ore zone (1538)
Clean milky white qtz. Veins are thicker here

H627 Sample# 1542B Kalg94 0.5g -420+200u Acid Washed
Kalgoorlie superpit, North end, B lode, 40 m west of main ore zone (1538)
Semi translcent white qtz. Veins are thicker here

H628 Sample# 1542C Kalg94 0.5g -420+200u Acid Washed
Kalgoorlie superpit, North end, B lode, 40 m west of main ore zone (1538)
Milky massive white qtz. Veins are thicker here

H629 Sample# 1542D Kalg94 0.5g -420+200u
Kalgoorlie superpit, North end, B lode, 40 m west of main ore zone (1538)
Milky white qtz. with goethite. Veins are thicker here

H630 Sample# 1543A Kalg94 0.5g -420+200u Acid Washed
Kalgoorlie superpit, North end, B lode, East of stockwork zone near 1538 locn.
thick Milky white qtz. + grey silic CR

H631 Sample# 1543B Kalg94 0.5g -420+200u
Kalgoorlie superpit, North end, B lode, East of stockwork zone near 1538 locn.
thick Milky white qtz. + much CR, fractured

H632 Sample# 1544A Kalg94 0.5g -420+200u
Kalgoorlie superpit, North end, B lode, Lower bench, same stringer zone as 1538
thin Milky white qtz. CR selvedge

H633 Sample# 1544B Kalg94 0.5g -420+200u Acid Washed
Kalgoorlie superpit, North end, B lode, Lower bench, same stringer zone as 1538
Milky white qtz. fine grained, recrystallized

H635 Sample# 1544C Kalg94 0.5g -420+200u Acid Washed
Kalgoorlie superpit, B lode, north end. Lower bench, same zone as 1538
Milky white qtz, 1cm thick, CR selvedges

H636 Sample# 1544D Kalg94 0.5g -420+200u Acid Washed
Kalgoorlie superpit, B lode, north end. Lower bench, same zone as 1538
Milky white qtz, much grey CR inclusions