Database name: |
Canadian Iron Formation |
Custodial agency: |
Geological Survey of Canada |
Compilers: |
G. A. Gross and E. M. Hillary |
Release date: |
2014-10-01 |
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Deposit name(s): |
Sample 12 - 2.2 km NE Cake Lake (occurrence) |
Political location(s): |
Canada; Province or state: Nunavut; Subprovince or locality: Central Baffin Island |
NTS map data: |
037C09 (Eqe Bay) |
Deposit clan (type): |
iron formation |
Deposit (sub) types: |
Algoma type |
Deposit status: |
anomaly-geochemical |
Geologic province: |
Canadian Shield |
Geologic subprovince: |
Rae craton |
Deposit object located: |
sample location |
Commodities: |
Au |
Geological ages: |
Archean (host rocks) |
Host rocks: |
(1) sedimentary; iron formation; Metamorphic grade: amphibolite - lower; Component: mineralization zoneExternal host rock forms: | tabular sedimentary body | Internal host rock structures: | banding | Individual lithologies: | iron formation - oxide | Host rock stratigraphy: | Mary River group |
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Related igneous rocks: |
(1) volcanic; mafic-intermediate volcanic rocksIndividual lithologies: | andesite basalt |
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Qualified comments: |
(Applies to: rock analysis and sample assays) 324 ppb Au in oxide facies iron-formation
(Applies to: mineralization) Au mineralization in oxide facies iron-formation.
(Applies to: property geology) The iron-formations are in intermediate-mafic volcanics of Mary River Group of Archean age.
(Applies to: metamorphism) The low grade Archean metamorphism of volcanic rocks and iron-formations was superimposed by Paleoproterozoic low pressure high temperature metamorphism. |
Links to other databases: |
NUMIN; Key value: 037CNE0016 |
Geophysical-chemical signature: |
Signature type: Airborne Magnetometer; Response type: positive (strong) Signature type: Ground Gravity; Response type: positive (strong) Signature type: Ground Magnetometer; Response type: positive (strong) |
Samples data: |
(1) Source ID: sample location-12; Collector: Bethune and ScammelCommodities and grades in order of importance: | Au: 324 ppb (fire assay) Ag: 3 ppm (ICP) As: 970 ppm (ICP) | Reference number: Bethune, K. M.; Scammel, R. J., 1997: Precambrian Geology, Koch Island area, District of Franklin, Northwest Territories, (parts of NTS 37C); Geological Survey of Canada, Open File 3391, Scale 1:50000 |
References: |
Bethune, K. M.; Scammel, R. J., 1997 |
Precambrian Geology, Koch Island area, District of Franklin, Northwest Territories, (parts of NTS 37C) |
Geological Survey of Canada, Open File 3391, Scale 1:50000 |
de Kemp, E. A.; Scott, D. J., 1998 |
Digital geoscience compilation of North Baffin Island and North Melville Peninsula, Northwest Territories |
Geological Survey of Canada, Open File, CD-ROM |
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