Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52K11NW00004

Record: MDI52K11NW00004

General

Commodities

Primary Commodities: Beryllium, Lithium

Location

Township or Area: Camping Lake Area

Latitude: 50° 41' 32.84"    Longitude: -93° 18' 44.54"

UTM Zone: 15    Easting: 477936.34   Northing: 5615672.22    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52K11NW

Point Location Description: Stripping

Location Method: Data Compilation

Access Description: The deposit is reached by a 280 m trail that extends east from Highway 105, 1.2 km north of bridge over Sandy Creek, 9.5 km north of Ear Falls.

Exploration History

The occurrence was discovered by Wm. Gulbis in 1962. Stripping, trenching and a berylometer survey took place in 1962 and 1963 under option to Madsen Red Lake Gold Mines Ltd. The dyke was stripped for a length of 54 m from its western end to a place along its length where overburden thickness became too great to strip at the time of exploration. 2002: D.M. Crawford conducted prospecting work and collected samples.

Assessment Work on File

Geology

Province: Superior

Subprovince: Uchi

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (R Tuomi) - The deposit is a lensoid pegmatite up to 5m wide. Foliation in the host rock trends 080 degrees and the pegmatite is roughly parallel to this. The dip is not exposed but previous work indicate it to be about 060 degrees north. The dyke was stripped for a length of 54m from its western end to a place along its length where overburden thickness became too great to strip at the time of exploration. The host rock is dark gray biotite diatexite. Contacts between the pegmatite and the host are sharp and tounges of pegmatite intrude the host along the north contact. The dyke shows zoning ad most of it (80%) is composed of aplitic-muscovite-quartz-albite pegmatite are present at the east end of the exposure. Beryl is found in these zones, frequently associated with dark green apatite. The beryl is difficult to identify but berylometer studies done during exploration of the pegmatite indicate significant beryl anomalies.

Lithology

Lithology Comments

May 29, 2018 (Therese Pettigrew) - The area straddles a sequence of interbedded metagreywackes and metavolcanics in the north and iron formation and metagreywacke in the south. These units are not divided by any marked lithological, structural or metamorphic boundaries. These rocks have been intruded by granitic rocks of at least three ages and by mafic dykes, stocks and batholiths. Muscovite-biotite granodiorite underlies the showing. These rocks may form part of a sedimentary-granitic complex. The rocks are heterogeneous in grain size, and range from medium- to coarse-grained with local fine-grained facies. Dykes of aplite and pegmatite are associated with the granodiorite. The aplite dykes are generally only a few centimeters wide and are fine-grained, leucocratic quartz-feldspar rocks. The pegmatite dykes may be 3 m or more in width. They are of variable composition and grain size and may have sharp or gradational contacts. The showing occurs in a 3.65 m wide pegmatite dyke; the dyke is exposed for 54.9 m. It is mostly fine-grained but some coarse-grained phases and pods are present (Vos et al., 1982).

Mineralization

Mineralization Comments

Feb 13, 2012 (A McKee) - 2001: Sampling as part of Operation Treasure Hunt (OFR 6099) by F.W. Breaks and J.B. Selway is included in MRD111. Sample 01-JBS-04 returned results of 3533 ppm Li and 298 ppm Be. 2002 Best assays returned: sample #3 - 2.0 ppm Be, 69.40 ppm Li, and sample #4 1034.48 ppm Ti

May 29, 2018 (Therese Pettigrew) - Beryl mineralization is sparsely present in a narrow dyke (maximum width 5.5 m) trending N90E and which is exposed for 52 m in an area of poor outcrop. Near the western end the dyke bifurcates forming a discordant southwest-trending arm. The dyke is largely concordant to the foliation of the host metasediments which are mainly muscovite biotite pelites and minor metawackes of medium-grade regional metamorphism. The dyke is asymmetrically zoned with virtual restriction of a 0.3 to 0.9 m wide pegmatite facies to the northern contact. Near the eastern end of the exposed dyke this narrow zone deflects into the centre of the dyke forming a core zone 15 m in length. The aplitic facies comprises approximately 80 percent of the dyke and consists of subhedral to anhedral quartz phenocrysts embedded in a matrix of felty, white to pink cleavlandite, and accessory purpurite, beryl, muscovite and apatite. The pegmatite contains essentially the same megascopic mineralogy as aplite, however, modal percentage and coarseness of muscovite, purpurite, and apatite tend to be greater. The highest percentage and coarsest beryl occurs in the pegmatite where maximum crystal diameters of 7.5 cm were observed. Pod-like masses enriched in coarse grained tourmaline occur sporadically in the host metapelites along the northern contact between tourmaline-free sediments and the pegmatite (Breaks, 1979).

Assay Samples

Mineral Record Details

References

Article - Lithophile mineralization in northwestern Ontario, rare element granitoid pegmatites

Publication Number: MP090.001 Page: 7  Date: 1997

Author: Breaks F.W.

Publisher Name: Ontario Geological Survey

Location:

Data - Electron Microprobe and Bulk Analyses of Fertile Peraluminous Granites and Related Rare-element Pegmatites, Superior Province, Northwest and Northeast Ontario: Operation Treasure Hunt

Publication Number: MRD111 Date: 2002

Author: Tindle A.G., Selway J.B., Breaks F.W.

Publisher Name: Ontario Geological Survey

Location:

File - Resident Geologist files 1963 52K/NW

Publication Number: Date:

Author:

Publisher Name:

Location: Red Lake RGP office

Map - Geological series, Operation Kenora-Ear Falls, Bruce-Bluffy lakes sheet, District of Kenora

Publication Number: P1199 Scale: 1:63,360    Date: 1976

Author: Breaks F.W., Bond W.D., Desnoyers D.W., Stone D., Harris N.

Publisher Name: Ontario Division of Mines

Location:

Publication - Fertile Peraluminous Granites and Related Rare-Element Mineralization in Pegmatites, Superior Province, Northwest and Northeast Ontario: Operation Treasure Hunt

Publication Number: OFR6099 Date: 2003

Author: Breaks F.W., Selway J.B., Tindle A.G.

Publisher Name: Ontario Geological Survey

Location:

Mono - Industrial minerals of northern Ontario-supplement 1

Publication Number: OFR5388 Page: 208-209  Date: 1982

Author: Vos M.A., Abolins T., Smith V.

Publisher Name: Ontario Geological Survey

Location:

Mono - An evaluation of the industrial mineral potential of parts of the districts of Kenora and Rainy River

Publication Number: OFR5718 Page: 164-166  Date: 1990

Author: Storey C.C.

Publisher Name: Ontario Geological Survey

Location:

Part - Geology of the upper part of the English River valley

Publication Number: ARV33-04.001 Page: 1-11  Date: 1998

Author: Bruce E.L.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Pegmatite mineral resources of Ontario

Publication Number: IMR021 Date: 1997

Author: Hewitt D.F.

Publisher Name: Ontario Dept. of Mines

Location:

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For detailed information regarding this mineral record please contact the Red Lake Resident Geologist District Office