Product catalogue
Sulphate complexes of YREE as a key to understanding unconformity-related HREE deposits
<div>Heavy rare earth elements are essential in renewable energy and high-tech products. Some natural rare earth element (REE) deposits exhibit heavy rare earth element (HREE) enrichment from < 10% to ~85% of the REE budget (Williams-Jones et al., 2015). </div><div><br></div><div>Controls on REE fractionation in hydrothermal systems are imposed by (1) changes in the relative stability of REE aqueous complexes with temperature (Migdisov et al., 2016) and (2) incorporation or rejection of REE by crystalline structures. Also, the REEs are invariably found as solid solutions but not as pure minerals. REE and yttrium (Y) sulphate complexes are some of the most stable REE and Y aqueous species in hydrothermal fluids (Migdisov and William-Jones, 2008, 2016; Guan et al., 2022) and may be responsible for REE transport and deposition in sediment-hosted deposits. Within the unconformity-related deposits, REEs are hosted mostly by xenotime ((Y,Dy,Er,Tb,Yb)PO4) and minor florencite ((La,Ce)Al3(PO4)2(OH)6) (Nazari-Dehkordi et al., 2019). Modelling the stability of xenotime in the H-O-Cl-(±F)-S-P aqueous system is critical for understanding HREE enrichment in this mineral system.</div><div><br></div><div>We use a newly derived thermodynamic dataset depos for REESO4+ and REE(SO4)2‑ aqueous complexes to generate stability diagrams illustrating mechanisms of REE transport and deposition in the above deposits. Sulphate REE complexes may dominate even in chloride-rich brines and facilitate REE mobilization in acid oxidizing environments. Previously Nazari-Dehkordi et al. (2019) proposed an ore genesis model involving the mixing of discrete hydrothermal fluids that separately carried REE + yttrium and phosphorus. The speciation model that includes sulphate complexes expands this scenario; a process resulting in fluid neutralization or reduction will also promote precipitation of xenotime enriched in HREEs. </div><div><br></div>This Abstract was submitted/presented to the 2022 Specialist Group in Geochemistry, Mineralogy and Petrology (SGGMP) Conference 7-11 November ( https://gsasggmp.wixsite.com/home/biennial-conference-2021)
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Identification info
- Date (Creation)
- 2022-09-17T02:00:00
- Date (Publication)
- 2023-02-20T02:27:28
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/147239
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Commonwealth of Australia (Geoscience Australia)
Voice Author Bastrakov, E.
Internal Contact Author Migdisov, A.A.
External Contact Author Huston, D.
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- Name
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Specialist Group in Geochemistry, Mineralogy and Petrology (SGGMP) Conference 7-11 November 2022 Yallingup WA
- Purpose
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An abstract for the Specialist Group in Geochemistry, Mineralogy & Petrology (SGGMP) Biennial conference 2022
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Resource provider Minerals, Energy and Groundwater Division
External Contact Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Bastrakov, E.
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- Geoscientific information
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))
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- Not planned
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Product data repository: Various Formats
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
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Critical minerals
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- Keywords
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Geochemistry
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REE
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mineralisation
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EFTF – Exploring For The Future
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EFTF
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- theme.ANZRC Fields of Research.rdf
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Inorganic Geochemistry
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Creative Commons Attribution 4.0 International Licence
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CC-BY
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4.0
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© Commonwealth of Australia (Geoscience) 2022
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
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Australian Government Security Classification System
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- English
- Character encoding
- UTF8
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
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Link to Conference Webpage
Link to Conference Webpage
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Link to GSWA Publications and maps (pdf)
Link to GSWA Publications and maps (pdf)
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<div>An abstract for the Specialist Group in Geochemistry, Mineralogy & Petrology (SGGMP) Biennial conference 2022. Based on the published experimental data (by 2022) and correlation algorithms, the authors have derived a dataset of the MHKF equation of state parameters for REESO4+ and REE(SO4)2‑ aqueous complexes. These parameters allow calculations of REE transport and deposition within a wide range of crustal temperatures and pressures (1 to 1000°C and 1 to 5,000 bar). The authors use this dataset to generate stability diagrams illustrating mechanisms of REE transport and deposition in the unconformity-related REE deposits deposits. </div>
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/744e8d57-efb5-4dc5-b28f-5522abcd296e
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Bastrakov, E.
Internal Contact
Type of resource
- Resource scope
- Document
- Name
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Conference Abstract
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/147239
- Date info (Creation)
- 2023-02-20T01:27:11
- Date info (Revision)
- 2023-02-20T01:27:11
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551