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

GAC/MAC Tanco Tour Sunday May 26, 1996

tanco underground mine stop map

Mine location stops map

Stop Location Zone
Number Stope (floor) Number            Geologic Feature

1 12/14-SRR (190) 8 High grade pollucite core of the Pollucite Zone.
2 16-SNN/SPP (184) 5/8 Low Grade Pollucite: a mixture of Pollucite Zone and Upper Intermediate (Spodumene) Zone.
3 16-SNN/SPP (184) 5 Upper Intermediate Zone - Spodumene-Quartz lntergrowth (SQUI) after primary petalite .
4 11-SU (190) 5 An approximately 10 metre "Tancocrystic" K-feldspar crystal in the Upper Intermediate Zone.
5 9-SP/SQ (190) 5 A single petalite pseudomorph; also amblygonite, petalite and pollucite found in the area.
6 14-SM (190) 9 The Upper Southwest Zone Lepidolite Zone
7 7-H (330) 7 & 3 Typical Quartz Zone. Contact with the Saccharoidal Albite Zone can be observed. The only known location at Tanco where cleaveable quartz can be seen in situ.
8 10-H (330) 2 Typical Wall Zone displaying megacrystic K-feldspar crystals.
9 21-N (305) 6 Central Intermediate Zone: the lower portion of a tantalum zone (O-Zone) in close proximity to a Quartz Zone.

The "Lookout" A good view of room and pillar mining method.
11 12-N (330) 4 Banded aplite in the Lower Intermediate Zone in close proximity to the Central Intermediate Zone.
12 14-N (350) 2 "Hayward's Horse": A xenolith of host metagabbro (amphibolite) within Zone 20. Such xenoliths generally generate their own surrounding Wall Zone (Zone 20)
13 Refuge Room 4 Typical Lower Intermediate Zone showing diverse (1st Level Stn.) mineralogy (lithian muscovites, SQUI, cookeite,K-feldspars, Na-feldspar).

Back to Tanco pegmatite page

Back to pegmatites page