Polymetallic Cu-Zn-Ag-Pb, Sn-W-Mo and Cu-Au-Bi mineralisation associated with I- and A-type granites in the Chillagoe region, north Queensland, Australia

Lehrmann, Berit, Oliver, Nicholas H.S., Rubenach, Michael J., and Georgees, Charlie (2009) Polymetallic Cu-Zn-Ag-Pb, Sn-W-Mo and Cu-Au-Bi mineralisation associated with I- and A-type granites in the Chillagoe region, north Queensland, Australia. In: Proceedings of the 10th Biennial Meeting of the the SGA 2009 (1), pp. 236-238. From: 10th Biennial Meeting of the SGA 2009, 17-20 August 2009, Townsville, QLD, Australia.

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Abstract

Polymetallic mineralisation of at least three major styles (Cu-Zn-Ag-Pb, Sn-W-Mo, and Cu-Au-Bi) occurs in different types of host rocks (skarns, breccias, porphyries) in the Chillagoe region of North Queensland, Australia. Relating mineralisation to the nearest plutonic rocks can give incorrect results, as a chain of overprinting events is responsible for the polymetallic mineralisation in the Chillagoe district. Of particular interest is that the spatially related granites of the Tate Batholith are mostly I-types (one Atype), but the metallogenic association includes elements normally associated with S-type granites (especially type II). This research is testing the potential genetic links between intrusions and mineralisation. It is possible that the Sn-W-Mo associations (and perhaps others) are related to metal contributions from the country rocks, rather than fluids released from intrusions. Alternately, if all these metals are derived from the granitoids, then a revision of the metallogenic connections between magma type and mineralisation is required.

Item ID: 11863
Item Type: Conference Item (Refereed Research Paper - E1)
Keywords: polymetallic mineralisation; skarns; I- and Atype granites; North Queensland (Australia)
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Conference theme "Smart Science for Exploration and Mining"

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ISBN: 978-0-9805586-8-5
Date Deposited: 10 Sep 2010 01:02
FoR Codes: 04 EARTH SCIENCES > 0403 Geology > 040307 Ore Deposit Petrology @ 100%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840102 Copper Ore Exploration @ 100%
Citation Count from Web of Science Web of Science 2
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