Ontario Geological Survey
Permanent Link to this Record:
MDI42D14SE00074
| Record Name(s) | Baker Vein - 1983, Courtney-Daniels - 1990, Worthington Creek - 1983 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1997-Feb-20 |
| Date Last Modified | 2023-Aug-03 |
| Created By | |
| Revised By |
Primary Commodities: Gold, Silver, Copper
Secondary Commodities: Molybdenum
Township or Area: Priske
Latitude: 48° 46' 10.94" Longitude: -87° 14' 44.25"
UTM Zone: 16 Easting: 481951.66 Northing: 5401884.74 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D14SE
Point Location Description: Stripped areas, trenches.
Location Method: Other Literature
Access Description: The occurrence is located in Priske Township approximately 3.6 km south southeast of Schreiber and 800 m north of the Worthington Bay shoreline of Lake Superior (claim map G 631). Access may be gained using the Worthington Bay road (Schreiber dump road) which branches off Highway 17 at a point 4.4 km east of Schreiber. The Worthington bay road extends south and west for approximately 2 km, where past the second creek a skidder trail leads to the south. Follow this trail for approximately 1.75 km to the Baker occurrence which is located on Worthington Creek.
1983: The Baker Vein was discovered by Walter Baker in 1983 while prospecting for United Continental Energy Corp. The vein could not be traced due to high water and overburden. 1990: The occurrence was relocated and staked by J. Courtney and G. Daniels. 1991-1994: Mechanical stripping, trenching, prospecting and sampling was conducted by J. Courtney and G. Daniels in the Baker Univex West area. 2006: American Bonanza Gold Corp. conducted prospecting and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.5935 | 42D14SE0050 | 42D14SE0050 |
| 2.14482 | 42D14SE0045 | 42D14SE0045 |
| OP91-081 | 42D15NW0006 | 42D15NW0006 |
| OP92-531 | 42D15SW0003 | 42D15SW0003 |
| 63.4384 | 42D14SE0067 | 42D14SE0067 |
| 2.13882 | 42D14SE0047 | 42D14SE0047 |
| 2.33410 | 20000001720 | 20000001720 |
| 2.14845 | 42D14SE8301 | 42D14SE8301 |
| 63.6179 | 42D14SE1101 | 42D14SE1101 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
Dec 07, 2005 (B Nelson) - Gold mineralization is associated with minor quartz and sulphide filled fractures in felsic intrusive rocks, including syenite and quartz porphyry. McLeod (1984) described the Baker occurrence as: Baker located mineralization in the bed of Worthington Creek approximately 1/4 mile to the south of the Univex showings. This is poorly exposed and could not be traced due to high water and overburden. Where seen, a tension fracture in massive granite strikes approximately N60 degreesE, appears to dip vertical and is occupied by a 12 inch wide quartz vein heavily mineralized with pyrite and chalcopyrite. Schnieders et al. (1991) described the 'Baker' occurrence as part of the Worthington Creek Property: The 'Baker' occurrence consists of a gossanous fracture zone that occurs on the east bank of the creek in a strongly jointed and fractured red syenitic host. The fracture zone strikes approximately 060 degrees, dips vertically, averages 25 cm in width, and has been exposed by overburden trenching for approximately 10 m. The host rock has developed subparallel joints striking 60 degrees to 65 degrees and dipping 65 degrees to 75 degrees south, as well as orthogonal cross fractures. Pinkish white, high weathered feldspars are conspicuous; quartz usually composes less than 10 percent of the rock, along with subordinate amphibole and epidote. Ubiquitous, fine grained, disseminated pyrite occurs in amounts up to 1 percent in the host. On the opposite (west) bank, quartz veins and vein breccia occur in a light grey pink, strongly epidotized syenitic host. Quartz veins on the west side of Worthington Creek strike from 54 degrees to 72 degrees. On the west bank stripping has revealed several sulphide seams hosted by a reddish feldspar porphyry. In addition a quartz porphyry unit was also observed displaying saussuritization.
| Rock Type | Rank | Composition | Texture | Relationship | Granite | 1 | Host |
|---|---|---|---|---|
| Vein | 2 | Quartz | Host | |
| Feldspar Porphyry | 3 | Host | ||
| Quartz Porphyry | 4 | Host | ||
| Syenite | 5 | Host |
Dec 07, 2005 (B Nelson) - In the host rock, pinkish white, high weathered feldspars are conspicuous; quartz usually composes less than 10 percent of the rock, along with subordinate amphibole and epidote.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Molybdenite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Epidote | Alteration | Epidotization | 1 | ||||
| Quartz | Alteration | Silicification | 2 | ||||
| Unknown | Alteration | Saussuritization | 3 |
Dec 07, 2005 (B Nelson) - The mineralized fracture zone consists of pyrite veinlets and anastomosing fine grained pyrite aggregates without quartz gangue. Sections of massive pyrite may reach 15 cm in width. Coarser grained pyrite may be recrystallized into monomineralic aggregates or may occur as blebs or clots up to 1 cm in diameter in the wall rock. Much of the pyrite has been recessively weathered. On the opposite (west) bank, quartz veins and vein breccia occur in a light grey pink, strongly epidotized syenitic host. The host rock is variably mineralized with up to 20 percent disseminated, medium grained, subhedral pyrite. Fractures are locally coated with fine grained molybdenite and pyrite. Pyrite occurs as blebs in the quartz veins while molybdenite may be concentrated along vein margins in the host itself. Samples collected by Resident Geologist personnel returned values of up to 0.98 oz/ton Au from the Baker vein, east side of river, near massive pyrite in reddish granite/syenite; 4.18 oz/ton Au , 12.49 oz/ton Ag, 1.11% Cu from massive pyrite; 0.65 oz/ton Au, 4.91 oz/ton Ag, 1.49% Cu from pyrite veinlet in host.
Dec 07, 2005 (B Nelson) - On the west bank, quartz veins and breccia occur in a light grey-pink, strongly epidotized syenitic host. Saussuritization was observed in the quartz porphyry unit.
Date: Feb 20, 1997
Geologist: B Nelson
Notes: Resident Geologist personnel visited the occurrence October 25, 1990 and July 13, 1994.
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
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:
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Page: 438-441 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, Precambrian geology of the Terrace Bay area, west sheet, Thunder Bay District
Publication Number: P2417 Scale: 1:15,840 Date: 1981
Author: Carter M.W.
Publisher Name: Ontario Geological Survey
Location:
Map - Schreiber area, District of Thunder Bay, Ontario
Publication Number: ARM47J Scale: 1:31,680 Date: 1997
Author: Bartley M.W., Harcourt G.A.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Geology of Schreiber-Terrace Bay area, District of Thunder Bay
Publication Number: OFR5692 Date: 1988
Author: Carter M.W.
Publisher Name: Ontario Geological Survey
Location:
Article - Schreiber-Hemlo Resident Geologist's District - 1990
Publication Number: MP152.007 Page: 154-155 Date: 1997
Author: Schnieders B.R., Smyk M.C., Hinz P.
Publisher Name: Ontario Geological Survey
Location:
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