
TY  - JOUR
A1  - Williams, Peter K. 
T1  - GOLD: Relationship between magnetic anomalism and epigenetic gold mineralisation in the Victory-Defiance area, Western Australia
JF  - ASEG Extended Abstracts
JO  - ASEG Extended Abstracts
Y1  - 1994
VL  - 1994
IS  - 1
SP  - 283
EP  - 296
KW  - 
UR  - https://doi.org/10.1071/ASEGSPEC07_20 
N2  - The relationship between gold mineralisation, genetically related mineral assemblages, magnetic susceptibility and features observable in ground and airborne magnetic surveying is established at three gold mines in the Victory-Defiance gold camp at Kambalda, Western Australia. The gold mines are Orion, North Orchin and Revenge. There are significant magnetite-stable alteration haloes enveloping the gold lodes comprising these deposits. The magnetite-stable alteration is peripheral to gold lodes in differentiated dolerites, metabasalts and metasedimentary rocks which have undergone lower to mid-greenschist facies metamorphism. The magnetite alteration is partly coincident with the well-documented chlorite and biotite alteration zones. The magnetic susceptibilities of the magnetite-stable alteration assemblages range to 100 ´ 10-3 SI units. It is noted that the magnetic properties of the Kapai Slate vary considerably on a regional scale but appear to be consistently high (up to 400 ´ 10-3 SI units) within the Victory-Defiance gold camp. Magnetic maxima are coincident with all three gold deposits. The amplitude of the maxima observed in low-level aeromagnetic surveys are 30, 300 and 400 nT for Orion, North Orchin and Revenge, respectively. 
ER  -

