| Title | Hyperspectral reflectance spectrometry in the exploration for VMS deposits using the Izok Lake Zn-Cu-Pb-Ag deposit, Nunavut as a test site |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Laakso, K; Rivard, B; Peter, J M |
| Source | Targeted Geoscience Initiative 4: Contributions to the understanding of volcanogenic massive sulphide deposit genesis and exploration methods development; by Peter, J M (ed.); Mercier-Langevin, P (ed.); Geological Survey of Canada, Open File 7853,
2015 p. 15-25, https://doi.org/10.4095/296542  Open
Access |
| Links | Canadian Database of Geochemical Surveys, downloadable
files
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| Links | Banque de données de levés géochimiques du Canada,
fichiers téléchargeables
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| Image |  |
| Year | 2015 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is contained in Targeted Geoscience
Initiative 4: Contributions to the understanding of volcanogenic massive sulphide deposit genesis and exploration methods development |
| File format | pdf |
| Province | Nunavut |
| NTS | 86H/10 |
| Area | Izok Lake |
| Lat/Long WENS | -112.8333 -112.5000 65.8333 65.5000 |
| Subjects | economic geology; geophysics; metallic minerals; Archean; volcanogenic deposits; sulphide deposits; alteration; metamorphism; mineral assemblages; mineralization; exploration guidelines; volcanic rocks;
mineral deposits; gold; remote sensing; satellite imagery; hydrothermal alteration; analytical methods; Precambrian |
| Illustrations | location maps; plots |
| Program | Targeted Geoscience Initiative (TGI-4) Volcanogenic Massive Sulfide Ore Systems |
| Released | 2015 06 11; 2023 03 17 |
| Abstract | We have investigated the application of ground, laboratory and airborne optical remote sensing methods to the detection of hydrothermal alteration zones associated with volcanogenic massive sulphide
(VMS) deposits using the Izok Lake Zn-Cu-Pb-Ag deposit, Nunavut as a test site. The deposit is located in a subarctic environment where lichens are abundant on the rock outcrops. The rhyolitic host rocks to the deposit have been hydrothermally
altered and contain white mica and chlorite group minerals. These alteration minerals have Al-OH and Fe-OH absorption features in the short-wave infrared (SWIR) wavelength region. The absorption feature wavelength positions can shift as a function of
chemical compositional changes within minerals. In and around the Izok Lake deposit there are systematic trends in the Al-OH and Fe-OH absorption feature wavelength positions with distance from the massive sulphide lenses. Furthermore, these trends
can be detected in bulk rock lithogeochemical data. Our results demonstrate the feasibility of using hyperspectral remotely sensed data to delineate hydrothermal alteration zones and determine alteration intensity in high-latitude regions. |
| Summary | (Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI-4) is a collaborative federal geoscience program that provides industry with the next generation of geoscience
knowledge and innovative techniques to better detect buried mineral deposits, thereby reducing some of the risks of exploration. This volume summarizes 12 research activities completed under the TGI-4 volcanogenic massive sulphide ore systems
project that focused on the understanding of the genesis of precious metal enriched VMS deposits as well as on VMS vectoring and unconventional detection methods development. |
| GEOSCAN ID | 296542 |
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