CRC LEME
Open File Report 11
ABSTRACT
Mineralogy and geochemistry of weathered shale profiles at the
Panglo Gold Deposit, Eastern Goldfields, WA
Scott, K.M.
Profiles through weathered shale derived from reverse circulation
drill holes at Panglo have been analyzed mineralogically by X-ray
diffractometry. Quartz, muscovite, kaolinite, Fe oxides and halite
are ubiquitous through such profiles but zones characterised by
the presence of alunite or paragonite or the carbonates, siderite
and dolomite, may be usefully employed during exploration. In weathered
shale at Panglo, alunite appears to be developed to a greater depth
above mineralization whereas paragonite occurs to higher levels
in barren sequences. Carbonates occur between the mineralized intervals
in one hole and may represent original hypogene wall-rock alteration
Molybdenum and Sb are the best pathfinders for Au with As, Tl and
W also useful in specific cases. Elements like Ag, Cu, Pb, Sn and
Zn are not consistently associated with the mineralization in the
weathered shales at Panglo. The low Sr contents through the profile
above mineralization may also be an indicator of mineralization.
Last updated: Tuesday, January 04, 2000 10:28 AM
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