Product catalogue
Producing Magnetite and Hematite Alteration Proxies using 3D Gravity and Magnetic Inversion: Method and results for the Tennant Creek—Mount Isa Project, northern Australia
<p>The Exploring for the Future (EFTF) initiative aims to reduce the technical risk of mineral exploration by providing pre-competitive data and information to support investment and mineral exploration in northern Australia – a key part of ensuring Australia's future economic prosperity.
<p>To support the EFTF initiative, the presence of hydrothermal alteration systems associated with iron oxide copper-gold (IOCG) deposits were estimated throughout the Tennant Creek -– Mt Isa Project area of northern Australia. These zones are of economic interest due to their potential to host copper, gold, uranium and rare earth element mineralisation.
<p>To predict the presence of IOCG-related alteration, gravity and magnetic intensity data were used to produce 3D models of density and magnetic susceptibility, respectively. The inversion models provide an indication of the volume and distribution of these physical properties within the subsurface and were used to define volumes with relatively high densities and high magnetic susceptibilities as proxies for magnetite-rich alteration and volumes with high density, but low magnetic susceptibility, as proxies for hematite-rich alteration.
<p>Contact zones between these two sets of volumes are considered to be the most favourable areas for potential IOCG mineralisation. However, the inversion modelling inevitably will have mapped a number of ‘false positives’, which will require more detailed inversion modelling and/or other data sets to discriminate these from true IOCG-related alteration.
Simple
Identification info
- Date (Creation)
- 2018-09-17T00:00:00
- Date (Publication)
- 2019-05-02T01:35:57
- Date (Revision)
- 2019-05-12T23:28:14
- Date (Revision)
- 2019-05-30T05:06:13
- Date (Revision)
- 2019-05-30T05:18:20
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/123013
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.11636/Record.2019.003
- Cited responsible party
-
Role Organisation / Individual Name Details Author Goodwin, J.A.
Author Skirrow, R.G.
- Name
-
Record
- Issue identification
-
2019/003
- Purpose
-
GA Record
- Status
- Accepted
- Point of contact
-
Role Organisation / Individual Name Details Point of contact Goodwin, J.A.
Resource provider Resources Division
Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
- Spatial representation type
Spatial resolution
- Level of detail
-
2000 m by 2000 m horizontally
- Topic category
-
- Geoscientific information
Extent
Temporal extent
- Time period
- 2018-09-17 2018-09-17
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
-
Product data repository: Various Formats
- Website
-
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
- Theme
-
-
Magnetic susceptibility
-
- Theme
-
-
Density
-
- Product
-
-
3D inversion modelling
-
- Theme
-
-
Magnetics
-
- Theme
-
-
Gravity
-
- Platform
-
-
UBCGIF
-
- theme.ANZRC Fields of Research.rdf
-
-
EARTH SCIENCES
-
- Keywords
-
-
EFTF
-
- Keywords
-
-
Published_External
-
Resource constraints
- Title
-
Creative Commons Attribution 4.0 International Licence
- Alternate title
-
CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
-
Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
-
Download the Record (pdf)
Download the Record (pdf)
- Distribution format
-
-
pdf
-
- OnLine resource
-
Download the data package (.tif, .sg, .ts, UBCGIF input/output files)
Download the data package (.tif, .sg, .ts, UBCGIF input/output files)
- Distribution format
-
-
.tif, .sg, .ts, UBCGIF input/output files
-
- OnLine resource
-
Presentation given by James Goodwin at the Australasian Exploration Geoscience Conference (AEGC) 2019
To support the Exploring for the Future (EFTF) initiative
- Distribution format
-
-
pdf
-
Resource lineage
- Statement
-
Not supplied
- Hierarchy level
- Document
Reference System Information
- Reference system identifier
- EPSG/GDA94 / MGA zone 53 (EPSG:28353)
Metadata constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/cf4fd0be-68e0-4798-88da-98361b8553ee
- Title
-
GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation / Individual Name Details Resource provider Goodwin, J.A.
Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Document
- Name
-
GA publication: Record
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/123013
- Date info (Creation)
- 2018-05-04T03:37:56
- Date info (Revision)
- 2018-05-04T03:38:12
Metadata standard
- Title
-
AU/NZS ISO 19115-1:2014
Metadata standard
- Title
-
ISO 19115-1:2014
Metadata standard
- Title
-
ISO 19115-3
- Title
-
Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
-
Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551