Ontario Geological Survey
Permanent Link to this Record:
MDI42E13SE00016
| Record Name(s) | Rickaby Occurrence - 9999, J.A. Wilson - 1983, Rickaby - 1983, Elmhirst-Miron - 1983, Miron's Elmhirst Stock Showing - 9999, Elmhirst-Miron Occurrence - 9999 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1983-Feb-02 |
| Date Last Modified | 2022-Jun-09 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Silver
Township or Area: Elmhirst
Latitude: 49° 49' 26.5" Longitude: -87° 39' 42.28"
UTM Zone: 16 Easting: 452401.941 Northing: 5519275.491 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E13SE
Point Location Description: Stripped areas, diamond drill holes.
Location Method: Conversion from MDI
Access Description: The occurrence is located in the northeast corner of Elmhirst Township, 1 km northwest of Wilkinson Lake. Travel 7 km east of Jellicoe along Highway 11 to what is known as the Camp 40 Road. Continue north for 14.5 km along this road to a point just east of Atigogama Lake. Here, the road heads west for some distance and returns to its northerly course at Wilkinson Lake. A gravel road leading to the Elmhirst-Miron Occurrence lies approximately 32.6 km from the Camp 40/Highway 11 junction. The occurrence is situated 1.8 km northwest from the Camp 40 Road.
1945: The ground covering the occurrence was staked by A.W. Burt and Don MacLeod. 1947-1975: The ground was cancelled and restaked numerous times. 1976: All interests were transferred to Rickaby Mines Limited, which power stripped five zones on the two claims. Conwest Exploration Limited optioned both claims and later dropped the option. 1977: The claims were cancelled. 1978: Property restaked. All interests in the northwest property was transferred to Metalore Resources. 1979: Metalore Resources' claim block included the Wilkinson Lake property to the southeast, on which a diamond drilling program was conducted. 1980: TB513204 was optioned to Dome Exploration Ltd. which conducted mag and EM surveys. Further drilling was done to the southeast. 1982: Dome Exploration Ltd. dropped their option on claim TB513204. 1985: A six claim group was staked in February by F.A. Checkley for Bill Miron, 0.5 km northwest of Wilkinson Lake in Elmhirst Township. To date, stripping and trenching have exposed two gold-bearing shear zones within the granodiorite on claim TB813378. In October, a 42 to bulk sample of mineralized quartz vein material was removed from Western Zone #1 and shipped to the Northern Concentrators Mill in Thunder Bay for testing.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| W7604-00040 | 42E13SE5111 | 42E13SE5111 |
Province: Superior
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The area is underlain by metavolcanics and igneous intrusive rocks of Precambrian age, but a large part is covered by Pleistocene sand and recent swamp deposits. More than half the map area is underlain by intermediate to felsic metavolcanics. The metavolcanics are intruded by Early Precambrian subcircular stocks of granodiorite, a sill-like body of gabbro, and numerous minor intrusions ranging from granitic to lamprophyric and pyroxenitic in composition. All of these rocks have been metamorphosed to the greenschist facies and are intruded by north-trending Late Precambrian Keweenawan diabase dykes which cut all of the older rocks. The 6 claim property straddles the boundary or contact zone between the Elmhirst Lake Stock and the surrounding intermediate to predominantly felsic metavolcanic rocks. The actual occurrence lies wholly within the granodiorite and consists of two parallel shear zones exposed by stripping. Both zones strike roughly north-south (333 degrees), dip steeply to the east, and are separated by 30 m of unexposed ground. Much of the work to date (stripping and blasting) has been concentrated on the eastern zone Zone #1 consists of rusty-stained, dull grey white quartz vein material up to 0.3 m wide that pinches and swells along strike. A mineralized, partially altered zone extends for 0.6 m on either side of the zone into the granodiorite country rock, resulting in total mineralization up to 1.5 m in width. Intense shearing is isolated to the granodiorite-quartz vein contact and extends along the length of the zone.
| Rock Type | Rank | Composition | Texture | Relationship | Granodiorite | 1 | Sheared | Host |
|---|---|---|---|---|
| Vein | 2 | Quartz | Host | |
| Gabbro | 3 | Gabbro | Near |
Dec 07, 2005 (B Nelson) - Most of the intermediate to felsic metavolcanics within the map area are pyroclastic rocks, such as tuff-breccia and crystal tuff. Massive, amygdaloidal, flow-banded and spherulitic flows are also common. These felsic to intermediate rocks are in conformable contact with a mafic sequence of massive, amygdaloidal and pillow lavas and related breccias, which occur in the southern and eastern parts of Rickaby Township.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Covellite | Economic | Ore | ||||
| 2 | Gold | Economic | Ore | ||||
| 3 | Sphalerite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | ||||
| Unspecified | Alteration | Potassic | 2 |
Dec 07, 2005 (B Nelson) - Mineralization within Zone #1 consists of up to 10% fine pyrite occurring as thin discontinuous seams, disseminated coarser (1 to 3 mm) euhedral pyrite and rare patches of chalcopyrite. In addition, pyrite is associated with inclusions of granodiorite (producing a crack-seal texture). Sample 85-MBM-10 (Zone #1-north end) returned a value of 0.19 oz/ton Au and 5.65 oz/ton Ag from highly gossaned material containing fine pyrite in contact with quartz vein. Sample 85-MBM-11 (Eastern Zone #2) returned a value of 0.11 oz/ton Au and 0.27 oz/ton Ag from grey-white quartz vein and medium grained granodiorite with some disseminated pyrite. 1985 assays include the following values: Sample 3851: 0.26 oz/ton Au, 5.99 oz/ton Ag Sample 3852: 0.19 oz/ton Au, 6.36 oz/ton Ag Sample 3853: 0.39 oz/ton Au, 3.90 oz/ton Ag Sample 3854: 0.43 oz/ton Au, 3.16 oz/ton Ag Sample 3855: 0.19 oz/ton Au, 10.06 oz/ton Ag.
Dec 07, 2005 (B Nelson) - Prominent pink potassic alteration was noted in Zone #1.
Date: Jan 17, 1997
Geologist: B Nelson
Notes: The Beardmore-Geraldton Economic Geologist visited the occurrence May 28, 1985, July 4, 1985, July 9, 1985 and October 23, 1985.
Article - 1975 report of the Northern Regional Geologist and Timmins Resident Geologist
Publication Number: MP064.005 Page: 44 Date: 1997
Author: Karvinen W.O., Hunt D.S.
Publisher Name: Ontario Division of Mines
Location:
MonoMap - Geology of Elmhirst and Rickaby townships, District of Thunder Bay
Publication Number: R168 Date: 1978
Author: Mackasey W.O., Wallace H.
Publisher Name: Ontario Geological Survey
Location:
Mono - Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane
Publication Number: OFR5630 Date: 1986
Author: Mason J.K., White G.D.
Publisher Name: Ontario Geological Survey
Location:
File - Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
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