The bimodal fluid evolution of the Nimbus Zn-Ag deposit: an Archean VHMS with epithermal characteristics

Files in This Item:
 File SizeFormat
Download53_Caruso_et_al_17_Nimbus.pdf1.15 MBAdobe PDF
Title: The bimodal fluid evolution of the Nimbus Zn-Ag deposit: an Archean VHMS with epithermal characteristics
Authors: Caruso, StefanoFiorentini, Marco L.LaFlamme, CrystalHollis, Steven al.
Permanent link:
Date: 23-Aug-2017
Online since: 2018-05-08T11:52:29Z
Abstract: The Nimbus Zn-Ag VHMS deposit represents an exceptional mineralised occurrence in the Yilgarn Craton. While other VHMS systems in the craton are restricted to paleo-rift zones, Nimbus is associated to a plume-related stratigraphy (Hollis et al., 2017). Furthermore, the epithermal characteristics resulting from low temperature and shallow water conditions allowed the development of an unusual mineralisation dominated by Ag-rich sulfosalts. In this study we take advantage of state-of-the-art in-situ techniques to investigate the fluid evolution of this peculiar VHMS system. From the trace element compositions and S-isotope signatures we suggest that Nimbus experienced a bimodal fluid evolution consisting of (i) an initial intense interaction between deep-magmatic fluids and seawater that developed barren pyritic lenses, and (ii) a subsequent closure of the hydrothermal system during which the Agrich ore formed sourcing sulfur almost entirely from a deepmagmatic source.
Type of material: Conference Publication
Publisher: Society for Geology Applied to Mineral Deposits
Keywords: Bimodal fluid evolutionVolcanic-hosted massive sulfideNimbus
Other versions:
Language: en
Status of Item: Peer reviewed
Conference Details: SGA Quebec 2017, Quebec City, Canada, 20-23 August 2017
This item is made available under a Creative Commons License:
Appears in Collections:Earth Sciences Research Collection
ICRAG Research Collection

Show full item record

Page view(s)

Last Week
Last month
checked on May 16, 2022


checked on May 16, 2022

Google ScholarTM


If you are a publisher or author and have copyright concerns for any item, please email and the item will be withdrawn immediately. The author or person responsible for depositing the article will be contacted within one business day.