- Title
- Possible intrusion-related gold systems in the western Lachlan orogen, southeast Australia
- Creator
- Bierlein, Frank; McKnight, Stafford
- Date
- 2005
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/34292
- Identifier
- vital:112
- Identifier
- ISSN:0361-0128
- Identifier
-
https://doi.org/10.2113/gsecongeo.100.2.385
- Abstract
- Several gold deposits occurring in the western Lachlan orogen have geological, geochemical, and geochronological characteristics that distinguish them from typical vein-hosted orogenic gold deposits of the central Victorian gold province. The later are responsible for more than 90 percent, of primary (hard-rock) gold production from this region and are generally considered to represent the only economically significant type of gold deposit in the western Lach an orogen. Atypical gold occurrences at Malmsbury, Myrtle Creek, Mount Piper, and the Wonga deposit in the Stawell goldfield are characterized by a close spatial and temporal association with posttectonic felsic intrusions, disseminated to stockwork-style mineralization, alteration dominated by sericitization, sulfidation, silicification, carbonatization and tourmalinization, and associated complex An ± Mo-W-Bi-Te-Cu. The deposits have a number of features in common with intrusion-related gold deposits elsewhere in Phanerozoic orogenic belts. Although production from this type of gold mineralization in the western Lachlan orogen has been small compared to orogenic gold deposits, the possible existence of intrusion-related gold deposits has potentially important implications for exploration in this region and also provides significant clues to the tectonic framework and Paleozoic metallogeny of eastern Australia. © 2005 Society of Economic Geologists, Inc.; C1
- Publisher
- Economic Geology Publishing Company
- Relation
- Economic Geology Vol. 100, no. 2 (2005), p. 385-398
- Rights
- Copyright Economic Geology Publishing Company
- Rights
- Open Access
- Rights
- This metadata is freely available under a CCO license
- Subject
- 0403 Geology; Carbonization; Geochemistry; Geology; Natural resources exploration; Ores; Tectonics; Central Victorian gold province; Intrusion-related gold systems; Metallogeny; Orogenic gold deposits; Gold deposits
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