CRC LEME
Open File Report 17
ABSTRACT
Mineralogy and geochemistry of mineralised and barren felsic
volcanic profiles, Parkinson Pit, Mt Magnet, WA
Scott, K.M.
Study of profiles through felsic rocks below a thin soil in the
southern portion of the Parkinson Pit at Mt Magnet shows zonation:
goethite -> muscovite-kaolinite -> muscovite-kaolinite-goethite
-> albite-goethite -> fresh rock. Calcrete may also be developed
at the soil-rock interface. Bands of mafic rock within these profiles
are similar mineralogically to adjacent felsic rocks but they do
have greater Ti, Co, Cr. Ni, Sc and V contents than the felsic rocks.
The elements, Co, Cu, Ni, Sc, W and Zn which were found to be strongly
associated with ferruginous rocks in mafic profiles are similarly
associated in the felsic profiles. Of the pathfinders, Ag, As, Mo
and Sb, associated with Au in mafic profiles, only As has been found
useful in felsic rocks. However, in these rocks W and B also appear
to be associated with Au.
Last updated: Tuesday, January 04, 2000 12:49 PM
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