Ontario Geological Survey
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MDI42D14NW00033
| Record Name(s) | Estell - 1913, Estell A and B Veins - 1913, Knox-Lang - 1954, Tb1911 - 1980 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1980-Jan-11 |
| Date Last Modified | 2022-May-09 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Gold, Molybdenum
Township or Area: Pays Plat Lake Area
Latitude: 48° 59' 47.45" Longitude: -87° 16' 35.09"
UTM Zone: 16 Easting: 479781 Northing: 5427105 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D14NW, 42E03SW
Point Location Description: AMIS location, map on p. 171 of OFR5951
Location Method: Data Compilation
Access Description: The prospect is located on the southern shore of Big Duck Lake, 21 km north of Schreiber (claims TB646717 and TB646718, claim map G-606, Pays Plat Lake). Easiest access is gained by aircraft to Big Duck Lake. A drill trail from the Winston Lake Mine also leads to Big Duck Lake. The showings are located approximately 30 m and 170 m south of the lakeshore.
1913: L.H. Estell staked the 'Brown' claim, TB 1911, which was patented in 1917. 1916: Contiguous claims TB 3144 and 3145 were staked by L.H. Estell. 1920: Surface trenching and pitting were carried out. 1923: The occurrence was restaked by L.H. Estell and W.J. Lynch. Surface work continued. 1935: The property was partially restaked by A.L. Kemp and W.M. Hay. However, the claims lapsed in 1938. 1946: Patented claim TB1911 came open for staking. 1951: Former claim TB1911 was staked by A. Heffren as TB 42288. 1952: Contiguous claims were staked by G. Black. 1954: J. Lang staked TB48853 and transferred all interest to E.P. McDonough who then transferred all interest to Lanson Holdings Limited. Lanson then conducted a geophysical survey (type unknown). S. Knox staked TB51474. 1955: All interest in TB51474 was transferred to Stratmat Limited. A resistivity survey was conducted. 16 diamond drill holes, totalling 2065 m were drilled. 1960: KRNO Mines Ltd. drilled two x-ray holes totalling 37.2 m. The claim lapsed. 1961-66: The occurrence was restaked by various individuals. No work was recorded. 1982: R. Szyda staked claims TB646717 and 646718 and transferred all interest to Corporation Falconbridge Copper. 1983: An airborne geophysical (mag and EM) survey was conducted. 1983-84: Various geological, geophysical and geochemical surveys were conducted and surface work undertaken.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 12 | 42D14NW0051 | 42D14NW0051 |
| 2.7632 | 42E03SE8252 | 42E03SE8252 |
| 2.6769 | 42D14NW0014 | 42D14NW0014 |
| 2.6770 | 42D14NE0046 | 42D14NE0046 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The Estell A vein is exposed over a length of 80 feet in a trench about 100 feet south of the shore of Big Duck Lake. Near the west end it strikes S65-70 degrees E. It is arcuate in shape, and curves such that, near its east extremity, it strikes easterly. It dips 60-65 degrees N, and ranges in thickness from about 10 to 20 feet. It is typically a sugary quartz vein. Near its centre, about 40 feet west of the trench, the vein is cut by a fault striking N30 degrees E. Along this fault, the vein suffered a righthand displacement of 20-30 feet. The Estell B occurrence is located approximately 200 m southeast from the Falconbridge Copper camp. The geology consists of mafic metavolcanic flows and tuff. The metavolcanics are well foliated, generally striking west to 320 degrees. A quartz vein striking 295 degrees and dipping 68 degrees N was observed on the shore of Big Duck Lake at Falconbridge's camp. The vein had a maximum width of 25 cm. The footwall consists of a highly foliated mafic metavolcanic, possibly a tuff. Sulphide rich seams, sheared metavolcanics and quartz veins are observed within the shear zone which is up to 2 m wide. The quartz vein strikes 325 degrees and dips 60-70 degrees N. Up to 3 parallel quartz veins are likely related to shearing on the emplacement of a felsic intrusive. The hanging wall consists of a hornblende-biotite schist, likely representing altered metavolcanics.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz | Host |
|---|---|---|---|---|
| Schist-Unsubdivided | 2 | Hornblende | Host | |
| Mafic lava flow-unsubdivided | 3 | Flow | Adjacent | |
| Mafic Tuff | 4 | Tuffaceous | Footwall | |
| Schist-Unsubdivided | 5 | Hornblende/Biotite | Hanging Wall |
Dec 07, 2005 (B Nelson) - The Estelle A vein exhibits a prominent sheeted appearance because of the presence of well-developed book and ribbon structures. The books and ribbons are made up of hornblende schist, in places highly altered to mica and chlorite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Molybdenite | Economic | Ore | ||||
| 3 | Malachite | Economic | Ore | ||||
| 4 | Pyrite | Economic | Ore | ||||
| 5 | Pyrrhotite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Carbonate | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | Unknown | Veins | ||
| Malachite | Alteration | Supergene | 2 | Unknown | Disseminated | ||
| Azurite | Alteration | Supergene | 3 | Unknown | Disseminated | ||
| Carbonate | Alteration | Carbonatization | 4 | Unknown | Disseminated |
Dec 07, 2005 (B Nelson) - The Estell 'A' vein is up to 1 m wide and contains py, cp, mc, az, and mo. The Estell 'B' vein hosts py, cp, and mo. Malachite and azurite gossans are observed on the rocks. Sections of drill core assayed by Stratmat Ltd. yielded results including the following: Hole 16-4: 0.04 oz/ton Au, 0.49% Cu, 0.16% Mo over 0.76 m. 0.06 oz/ton Au, 1.19% Cu, 0.03% Mo over 0.82 m. Hole 16-9: 0.55 oz/ton Au, 2.25% Cu, 0.02% Mo over 0.61 m. Hole 16-10: 0.02oz/ton Au, 0.57% Cu. Hole 16-12: 0.03 oz/ton Au, 0.75% Cu. Samples by Resident Geologist personnel returned the following values: 83-BEA-1 (A Vein): 0.02 oz/ton Au; 0.10 oz/ton Ag; 7800 ppm Cu; 930 ppm Mo 83-BEB-3 (B Vein): 0.01 oz/ton Au; 0.10 oz/ton Ag; 5160 ppm Cu; 120 ppm Mo 83-BEB-4 (B Vein): 0.05 oz/ton Au; 0.10 oz/ton Ag; 1960 ppm Cu; 127 ppm Zn; 840 ppm Mo 83-BEB-7 (B Vein): 0.01 oz/ton Au; 0.16 oz/ton Ag; 4800 ppm Cu; 54 ppm Pb; 40 ppm Zn; 27 ppm Mo.
Date: Feb 10, 1997
Geologist: B Nelson
Notes: Resident Geologist staff visited the occurrence July 7, 1983.
Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District
Publication Number: M2232 Scale: 1:253,440 Date: 1973
Author: Carter M.W., McIlwaine W.H., Wisbey P.A.
Publisher Name: Ontario Division of Mines
Location:
MonoMap - Mineral deposits of the Big Duck Lake area, District of Thunder Bay
Publication Number: R027 Page: 31-34 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
File - Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Map - Big Duck Lake area, District of Thunder Bay
Publication Number: M2023 Scale: 1:15,840 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 323 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Big Duck-Aguasabon lakes area, District of Thunder Bay, Ontario
Publication Number: ARM49K Scale: 1:31,680 Date: 1997
Author: Bartley M.W.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Page: 164-171 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
Part - Schreiber-Duck Lake area
Publication Number: ARV30-04.001 Page: 22 Date: 1998
Author: Hopkins P.E.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Schreiber-Duck Lake area, District of Thunder Bay
Publication Number: ARM30A Scale: 1:63,360 Date: 1998
Author: Hopkins P.E., Tanton T.L.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Molybdenum deposits of Ontario
Publication Number: MDC007 Page: 71-72 Date: 1968
Author: Johnston F.J.
Publisher Name: Ontario Dept. of Mines
Location:
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