Abstract
Paragenetic, fluid-inclusion, stable isotope, and 87Sr/86Sr and 143Nd/144Nd isotope studies of the Mt Carbine tungsten deposit in north Queensland provide information on the sources of the mineralizing components and record the history of fluid-rock interaction during the hydrothermal process. The ore minerals, wolframite and scheelite, are contained in quartz veins which post-date the major deformations in the Siluro-Devonian Hodgkinson formation. Mineralization was immediately preceded by the emplacement of the Mossmann batholith (280 + or - 7 m.y.). Two major stages of mineralization are present and separated by a brittle fracturing episode. The stable isotope, Sr and Nd isotope data suggest that the ore fluids during stage I and most of stage II mineralization were a mixture of magmatic water and non-magmatic water (connate or metamorphic) which had experienced a long residence time and had extensively exchanged with the sediments at high T. Subsequent mineralization events were dominated by fluids of meteoric derivation with a short residence time. The data imply that other solutes such as W, were probably derived in minor part from local country rock sources with the major contribution coming from a magmatic source related to the granite batholith. -J.M.H.
Original language | English |
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Title of host publication | Pacific Rim congress 87. Proc. international congress |
Place of Publication | Parkville, VIC |
Publisher | Australasian Institute of Mining and Metallurgy |
Pages | 173-177 |
Number of pages | 5 |
ISBN (Print) | 0949106151 |
Publication status | Published - 1987 |
Event | Proceedings Pacific Rim Congress 87 (Australasian Institute of Mining and Metallurgy) - Parkville, Vic, Australia Duration: 26 Aug 1987 → 29 Aug 1987 |
Conference
Conference | Proceedings Pacific Rim Congress 87 (Australasian Institute of Mining and Metallurgy) |
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Country/Territory | Australia |
City | Parkville, Vic |
Period | 26/08/87 → 29/08/87 |