Evidence for a Proterozoic carbonatite system in the Mount Isa Province, Australia

Brown, Alex, Spandler, Carl and Blenkinsop, Thomas G. ORCID: https://orcid.org/0000-0001-9684-0749 2025. Evidence for a Proterozoic carbonatite system in the Mount Isa Province, Australia. Precambrian Research 422 , 107784. 10.1016/j.precamres.2025.107784

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Abstract

Carbonatites are indicators of mantle processes, and they are economically important because of their association with rare earth element (REE), niobium and base metal deposits. Carbonatites and their associated lithologies (i.e. the carbonatite system) have not previously been identified in eastern Australia. We describe veins of dolomite calcite carbonatite, fenites and antiskarn, glimmerite, and alkali pegmatite from the Tommy Creek Domain, of the Eastern Subprovince of the Mount Isa Province (NW Queensland), that constitute a carbonatite system. The system can be identified from field relationships, geochronology, zircon trace elements, and stable and radiogenic isotopes. The emplacement of the carbonatite system coincided temporarily and spatially with regional hydrothermal alteration at ca. 1650 Ma in the Eastern Subprovince, which also has mantle isotopic affinities and is located above the boundary between thin and thick continental lithosphere.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Earth and Environmental Sciences
Publisher:	Elsevier
ISSN:	0301-9268
Date of First Compliant Deposit:	24 April 2025
Date of Acceptance:	23 March 2025
Last Modified:	28 Apr 2025 10:30
URI:	https://orca.cardiff.ac.uk/id/eprint/177883

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