Ontario Geological Survey
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MDI42G05NE00004
| Record Name(s) | Lowther Township Pegmatite - 2001, A. Villeneuve Property - 1939, A. Trousse Property - 1955, I. Topaloff Property - 1955, Decoy Property - 2001 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1985-Nov-19 |
| Date Last Modified | 2023-May-19 |
| Created By | |
| Revised By |
Primary Commodities: Rubidium, Beryllium, Lithium, Cesium, Mica
Secondary Commodities: Niobium, Tin, Tantalum
Township or Area: Lowther
Latitude: 49° 29' 33.42" Longitude: -83° 43' 28.37"
UTM Zone: 17 Easting: 302704 Northing: 5485788 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42G05NE
Point Location Description: outcrop location as described in T-2242
Location Method: Based on Assessment
Access Description: Access to the property is by way of Hwy 583 south from Hearst for approximately 20 km. The last 16 km is accessible by ATV and 2 creeks have to be crossed.
1939: ODM (M.E. Hurst): Property visit. Pre-1955: unknown - Pits excavated. 1955: ODM Res Geol. (S.A.Ferguson) - Property visit, sampling, analyses. 1957: I. Topaloff - DD-3-89 ft. 1967: Noranda Exploration Co., Ltd.- ground geophysics 2001-2008: Lecours Exploration Inc. - trenching, stripping, channel sampling, whole rock analysis.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-6132 / 2.44825 | 20000004592 | 20000004592 |
| T-5520 / 2.34863 | 20000002116 | 20000002116 |
| T-5784 / 2.39075 / W0860.01846 | 20000003225 | 20000003225 |
| T-4724 / 2.23480 | 42G05NE2002 | 42G05NE2002 |
| T-1897/ 2.2726 | 42G05NE0001 | 42G05NE0001 |
Province: Superior
Subprovince: Quetico
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Host |
|---|---|---|---|---|
| Tonalite | 2 | Pegmatitic | Near | |
| Vein | 3 | Lepidolite | Is |
Apr 11, 2014 (D Draper) - A spodumene bearing pegmatite occurs adjacent to (north of) a 60ft wide quartz zone. Pegmatite also occurs as irregular patches within a large outcrop of pink granite on the south side of the quartz.
Apr 11, 2014 (A Wilson) - The occurrence is described as a 45 m wide dike of muscovite-biotite pegmatitic granite hosted in a hornblende-biotite-garnet tonalite mass of unknown extent. The occurrence of a smaller pegmatite within the same pegmatitic granite dike and having a similar strike orientation suggest a ladder vein structure of the rare-element pegmatites. The pegmatite is described as a lepidolite to spodumene subtype pegmatite. The pegmatite is complexly zone with 6 pegmatite zones. These zones are (outermost to core): sodic wall zone; aplite zone; spodumene zone; cleavlandite rich zone with local coarse-grained beryl; lepidolite + cleavlandite pod; quartz core/pods of green muscovite and minor spessartine and black tourmaline. The Moskito Showing was discovered in 2005 approximately 100 m south of the Decoy Showing. Brown beryl up to 5 cm were identified within the feldspar zone surrounding the pegmatitie. Grab samples of the beryl assayed 1.86% Be. A grab sample taken from the site in 2006 assayed up to 115.5 Sc.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Spodumene | Economic | Ore | ||||
| 2 | Lepidolite | Economic | Ore | ||||
| 3 | Beryl | Economic | Ore | ||||
| 4 | Cleavelandite | Economic | Ore | ||||
| 5 | Cassiterite | Economic | Ore | ||||
| 1 | Albite | Economic | Gangue | ||||
| 2 | Muscovite | Economic | Gangue | ||||
| 3 | Garnet | Economic | Gangue | ||||
| 4 | Pyrite | Economic | Gangue | ||||
| 6 | Muscovite | Economic | Gangue |
Apr 11, 2014 (D Draper) - 1955: Dept. of Mines X-ray and spectrographic analysis confirms presence of spodumene. The host pegmatite also contains muscovite crystals up to 5 inches in diameter. Lepidolite veins 4 inches wide by up to10 ft long are also present in association with the quartz zone.
Apr 11, 2014 (A Wilson) - The primary mineralogy comprises spodumene, muscovite, blocky K feldspar and green beryl. Irregular zones of orange garnet-green muscovite-cleavelandite-rich replacement masses are significantly present. Platy black Ta-oxide minerals have mostly been found in the cleavelandite-rich replacement masses. Bulk analysis of muscovite gave values of 54 ppm Ta, 375 ppm Nb, 247 ppm Cs, 1155 ppm Li and 5525 ppm Rb. The green muscovite in the cleavlandite-rich masses contains 0.1 to 0.7% Rb and <0.2% Cs. Feldspar returned 82-305 ppm Cs and 971-3725 ppm Rb. Beryl contains 330 ppm Rb, 1728 ppm Li, 1.6% Na oxide and 2.6% Cs oxide. The pegmatite contains albite (cleavelandite and aplite), quartz, spodumene, lepidolite, beryl, muscovite, K-feldspar, spessartine garnet, tourmaline, minor cassiterite, manganocolumbite, ferrocolumbite, microlite, struverite and pyrite. A grab sample of a lepidolite pod assayed 4700 ppm Cs and 1.3% Li
| Commodity | Analytical Method | Digestion Method | Result | Unit | Limit | Qualifier |
|---|---|---|---|---|---|---|
| Cesium | Unknown | 247 | ppm | |||
| Lithium | Unknown | 1155 | ppm | |||
| Niobium | Unknown | 375 | ppm | |||
| Rubidium | Unknown | 5515 | ppm | |||
| Tantalum | Unknown | 54 | ppm |
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Tabular | 110 | 4.6 | 322 |
Date: May 22, 2003
Geologist: A Wilson
Notes: Breaks et al. report the following: The pegmatite occurs as a lens-shaped body 3.7 to 11 m in width over a minimum length of 110 m, in which the long axis of the pegmatite is oriented 110 degrees. There is a gradational contact between the Lowther pegmatite and its parent granite pegmatite. The parent granite contains blocky perthitic pink to white potassium feldspar, coarse-grained green muscovite and minor black tourmaline and garnet. The pegmatitic granite is enclosed wIthin massive biotite-hornblende diorite.
Book - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Page: 9 Date: 1985
Author: Rose, D.G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
File - Resident Geologist file T-2242
Publication Number: Date:
Author:
Publisher Name:
Location: Timmins RGP office
Map - Hearst sheet, districts of Cochrane and Algoma, geological compilation series
Publication Number: P0397 Scale: 1:126,720 Date: 1997
Author: Bennett G., Brown D.D., George P.T., Leahy E.J.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Hearst-Kapuskasing sheet, geological compilation series, Algoma and Cochrane districts
Publication Number: M2166 Scale: 1:253,440 Date: 1969
Author: Bennett G., Brown D.D., George P.T., Leahy E.J.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Pegmatite mineral resources of Ontario
Publication Number: IMR021 Page: 48 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Industrial minerals of northern Ontario
Publication Number: MDC026 Page: 117 Date: 1985
Author: Vos M.A., Abolins T., McKnight R.L.W., Smith V.
Publisher Name: Ontario Geological Survey
Location:
Mono - Operation Kapuskasing
Publication Number: MP010 Page: 65 Date: 1967
Author: Bennett G., Brown D.D., George P.T., Leahy E.J., Guillet G.R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Fertile Peraluminous Granites and Related Rare-Element Mineralization in Pegmatites, Superior Province, Northwest and Northeast Ontario: Operation Treasure Hunt
Publication Number: OFR6099 Page: 104 Date: 2003
Author: Breaks F.W., Selway J.B., Tindle A.G.
Publisher Name: Ontario Geological Survey
Location:
Compend - Summary of Field Work and Other Activities, 2002
Publication Number: OFR6100 Page: 6.26-6.29 Date: 2002
Author: Baker C.L., Debicki E.J., Kelly R.I., Parker J.R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Fertile and Peraluminous Granites and Related Rare-Element Mineralization in Pegmatites, North-Central and Northeastern Superior Province
Publication Number: OFR6195 Page: 89-101 Date: 2006
Author: Breaks F.W., Selway J.B., Tindle A.G.
Publisher Name: Ontario Geological Survey
Location:
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