Ontario Geological Survey
Permanent Link to this Record:
MDI41P12SW00131
| Record Name(s) | Murgold #15 Vein - 1983, Siragusa #75 - 1993 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2000-Mar-16 |
| Date Last Modified | 2022-Sep-22 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Chester
Latitude: 47° 34' .08" Longitude: -81° 52' 57.47"
UTM Zone: 17 Easting: 433610.59 Northing: 5268518.71 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 41P12SW
Point Location Description: Trench
Location Method: Field Visit with GPS
Access Description: Very easy access to the prospect is possible from highway 144 via the Mesomikenda Lake then to the Chester Hannon mine access road. The prospect is located on the south side of the road, just west of Mesomikenda Lake.
1981: Murgold Resources - VLF-EM survey, stripping. 1983: Murgold Resources Inc. – Rept, GL, Assays.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-2433 / 63.4436 | 41P12SW0061 | 41P12SW0061 |
| T-2433 / 2.4888 | 41P12SW0071 | 41P12SW0071 |
| T-2433 / 2.4889 | 41P12SW0004 | 41P12SW0004 |
| T-2433 / 63.4370 | 41P12SW0002 | 41P12SW0002 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Swayze
Geological Age: Neoarchean Geochronological Age: 2740 MA Geochron. Age Ref.: GSC OF 3384G
Oct 25, 2013 (A Wilson) - Within the mineralized granodiorite, there is an open stockwork of small, discontinuous shear zones. The zone is up to 3m wide, but the individual shears are less than 5 cm wide. The small shears are marked by a grain size reduction and a weakly developed halo of disseminated sulphide mineralization.
| Rock Type | Rank | Composition | Texture | Relationship | Granodiorite | 1 | Host |
|---|---|---|---|---|
| Diorite | 2 | Diorite | Near |
Oct 25, 2013 (A Wilson) - The mineralization is hosted in a coarse-grained, quartz rich leucogranodiorite. Away from the known mineralization, there are a number of large, fine- to coarse-grained diorites which are probably xenoliths from the earlier phases of the Chester Granitoid Complex. These more mafic phases are cut by small felsic dikes, minor shear zones with some chlorite alteration, but no apparent mineralization.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| Pyrite | Alteration | Pyritic | 1 | Weak | Disseminated |
Oct 25, 2013 (A Wilson) - Most of the mineralization occurs as disseminated pyrite extending a few centimetres from small shears. These mineralized sections form up to 10% of the main shear zone in an open stockwork and are separated by poorly mineralized granodiorite. Locally within some of the small shears, there are quartz rich pods up to 20 cm x 200 cm with semi-massive, coarse-grained pyrite, together with hematite and minor chalcopyrite. Murgor reportedly obtained assays up to 13 g/t Au from this showing. Grab samples collected by the OGS in 1993 returned the following values: 0.46 g/t Au, 0.3 g/t Ag; 0.01 g/t Au, 0.1 g/t Ag.
| Rank | Classification |
|---|---|
| 1 | Mesothermal |
| Rank | Characteristic |
|---|---|
| 2 | Podiform |
| 1 | Sheared |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Tabular | 15 | 2 | 244 | 90 |
File - Resident Geologist files T-5250
Publication Number: Date:
Author:
Publisher Name:
Location: Timmins RGP office
Map - Geological series, Precambrian geology of Chester and Yeo townships, and parts of Neville and Potier townships, Jerome area, Sudbury District
Publication Number: P2449 Scale: 1:15,840 Date: 1981
Author: Siragusa G.M.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology, Geochemistry and Mineralization of the Southern Margin of the Swayze Belt
Publication Number: OFR5844 Page: 106 Date: 1993
Author: Siragusa G.M.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Parts of Chester, Neville, Potier and Yeo Townships
Publication Number: OFM0214 Scale: 1:15,840 Date: 1993
Author: Siragusa G.M.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Mineral Prospects of the Swayze Greenstone Belt (Volume 1, Parts of NTS 41 O and Volume 2, Parts of NTS 41 P, 42 A and 42 B)
Publication Number: OFR5912 Page: 453-455 Date: 1995
Author: Fumerton S.L., Houle K.A.
Publisher Name: Ontario Geological Survey
Location:
Map - Geology, Swayze greenstone belt, Gogama, Ontario
Publication Number: OF3384G Scale: 1:50,000 Date: 1999
Author: Heather, K B; Shore, G T
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/210455
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