Survey Metadata
Soil, Till, Vegetation, Bedrock, Indicator minerals, Selective extraction
Manitoba
1999
Multimedia survey, Operation Superior, NTS 53L, east central Manitoba, 1999.
Location map
(requires an Internet connection)
Primary Publications (see below for full list)
| Index | Publication |
|---|---|
| 1 | Fedikow, M.A.F, Nielsen, E., Conley, G.G., Lenton, P.G. (2000). Operation Superior: multimedia geochemical and mineralogical survey results from the southern portion of the Knee Lake greenstone belt, northern Superior Province, Manitoba (NTS 53L): Volume 1. Manitoba Industry, Trade and Mines, Geological Survey, Open File Report 2000-2, 75 p. ( more) |
Survey Description
In 1999, multimedia geochemical samples, including humus, soil, till, vegetation and rocks were collected at 239 sites from the southern portion of the Knee Lake greenstone belt in east central Manitoba as part of Operation Superior. Samples were collected on approximately 1 km centres or as dictated by access to landing sites using a float equipped helicopter. A till pit was hand augered at each site and all other samples were collected in and around the immediate area of the till pit.
Humus samples were collected from beneath the moss mat that was normally removed prior to digging the till sample pit. If the humus layer was too thin, the sample site was moved 5-10 m away from the till pit. Care was taken to avoid any inorganic material. Duplicate samples were collected at approximately every tenth site.
B-horizon soil samples were collected from the pit dug for the till samples. The B-horizon was isolated on a clean face of one or more walls of the pit and then scooped into a sample bag. Care was taken not to include any organic material. Duplicate samples were collected at every tenth site.
Till samples were collected at 239 sites from hand-dug holes to bedrock, a maximum depth of about 1 m or until relatively unoxidized C-horizon till was intersected.
Between June and August 1999, black spruce crown twigs were collected from each sampling site. At most sites, the vegetation was collected within 20 m of the till pit. The twigs were collected from the upper 45 cm of the tree.
Outcrop rock chip samples were collected after moss mats and soil were removed from the outcrop. A representative sample consisted of 3-4 fist-sized chips.
The data are published in Manitoba Energy and Mines Open File Report OF2000-2.
Kimberlite indicator mineral (KIM) data are also available in Manitoba Geological Survey Open File Report OF2002-1.
The data are also part of three compilations in Manitoba Agriculture and Resource Development open files OF2020-2, OF2020-5 and OF2020-6.
Data Description:
Paper and digital.
Quantities Analysed:
<0.177 mm fraction of humus was analyzed by ICP-AES after a four-acid total digestion and by INAA for suites of elements.
<0.250 mm fraction of B-horizon samples by enzyme leach-ICP-MS; an ICP-AES analysis of the enzyme leachate was done for Mn, Al, Ca, Fe, Na, Mg, K and Si.
<0.002 mm fraction of till for 34 elements by ICP-AES after nitric-aqua regia partial dissolution, As by hydride generation – AAS and Hg by cold vapour-AAS. <0.063 mm fraction of till by INAA for Au and 34 elements.
Ashed vegetation samples were analysed by ICP-AES after an aqua regia dissolution and by INAA.
Geochem Maps Available:
Proportional dot maps showing distribution of elements in various sample media.
Other Analyses:
<0.063 mm fraction of till for carbonate by Chittick method.
Publication History
| Index | Publication |
|---|---|
| 1 | Fedikow, M.A.F, Nielsen, E., Conley, G.G., Lenton, P.G. (2000). Operation Superior: multimedia geochemical and mineralogical survey results from the southern portion of the Knee Lake greenstone belt, northern Superior Province, Manitoba (NTS 53L): Volume 1. Manitoba Industry, Trade and Mines, Geological Survey, Open File Report 2000-2, 75 p. ( more) |
| 2 | Fedikow, M.A.F., Nielsen, E., Conley, G.G., Lenton, P.G. (2002). Operation Superior: compilation of kimberlite indicator mineral survey results (1996-2001). Manitoba Industry, Trade and Mines, Manitoba Geological Survey, Open File Report 2002-1, 60 p. ( more) |
| 3 | Keller, G.R., Bogdan, D.J., Matile, G.L.D. (2004). Manitoba kimberlite indicator mineral database (version 3.0). Manitoba Industry, Economic Development and Mines, Manitoba Geological Survey, Open File Report 2004-25. ( more) |
| 4 | Gauthier, M.S. (2020). Manitoba till-matrix geochemistry compilation 1: silt plus clay (<63 μm) size-fraction by instrumental neutron activation analysis. Manitoba Agriculture and Resource Development, Manitoba Geological Survey, Open File OF2020-2, 6 p. ( more) |
| 5 | Gauthier, M.S. (2020). Manitoba till-matrix geochemistry compilation 3: clay (<2 μm) size-fraction by atomic absorption spectrometry or inductively coupled plasma–emission spectrometry after aqua-regia digestion. Manitoba Agriculture and Resource Development, Manitoba Geological Survey, Open File OF2020-5, 5 p. ( more) |
| 6 | Gauthier, M.S. (2020). Manitoba till-matrix geochemistry compilation 4: visible gold grains in the heavy mineral (<2 mm; –10 mesh) size-fraction. Manitoba Agriculture and Resource Development, Manitoba Geological Survey, Open File OF2020-6, 3 p. ( more) |
Project History
Geographic Extent
| Minimum Latitude | Maximum Latitude | Minimum Longitude | Maximum Longitude |
|---|---|---|---|
| 54.6269° | 54.9748° | -95.4989° | -94.4717° |
The geographic extent of the survey is defined by the following polygons:
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Covers part of NTS 53L (Oxford House), the southern part of the Knee Lake greenstone belt, northern Superior province, east central Manitoba. It is located just south of Knee Lake and just west of God's Lake.
Keywords
- Date modified: