Authors / CoAuthors
Jaireth, S. | Hoatson, D. | Miezitis, Y.
Abstract
Rare-earth-element (REE) mineral systems in Australia are associated with igneous, sedimentary, and metamorphic rocks in a range of geological environments (http://www.ga.gov.au/image_cache/GA19657.pdf). Elevated concentrations of these elements have been documented in various carbonatite intrusions, (per)alkaline igneous rocks, iron-oxide breccia complexes, calc-silicate rocks (skarns), fluorapatite veins, pegmatites, phosphorites, fluvial sandstones, unconformity-related uranium deposits, lignites and heavy-mineral sand deposits (beach, dune, marine tidal, and channel). The distribution and concentration of REE in these deposits is influenced by various rock-forming processes including enrichment in magmatic or hydrothermal fluids, separation into mineral species and precipitation, and subsequent redistribution and concentration through weathering and other surface processes. The lanthanide series of REE and yttrium, show a close association with alkaline felsic igneous rocks, however, scandium in laterite profiles has an affinity with ultramafic-mafic igneous rocks.
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nonGeographicDataset
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73305
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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Keywords
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- External PublicationConference Paper
- ( Theme )
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- mineral deposits
- ( Theme )
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- mineral exploration
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
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2012-01-01T00:00:00
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