Ontario Geological Survey
Permanent Link to this Record:
MDI41O16NW00033
| Record Name(s) | Dome East Zone - 1983 |
|---|---|
| Related Record Type | Simple |
| Record Status | Occurrence |
| Date Created | 1999-Nov-10 |
| Date Last Modified | 2022-Jan-05 |
| Created By | A Wilson |
| Revised By | A Wilson |
Primary Commodities: Gold
Township or Area: Newton
Latitude: 47° 53' 4.02" Longitude: -82° 22' 35.89"
UTM Zone: 17 Easting: 397081.003 Northing: 5304374.588 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 41O16NW
Point Location Description: Scaled off of a company grid map.
Location Method: Data Compilation
Access Description: Access to the general zrea of hte occurrence is easy via the Dore main haul road and the Orofino Mine/Rundle Mine access road. A point sevral kilometres south of the Swayze River, where the road crosses a small creek is about 400 meters north of the showing and must be traversed.
1966: Hanna Mining Company - airborne mag and EM survey, reconnaissance and detailed mapping. 1982-87: Dome Exploration - reconnaissance mapping and lithogeochemistry, stripping, diamond drilling (9 ddh), detailed mapping, ground geophysics.
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Swayze
Geological Age: Neoarchean Geochronological Age: 2700 MA Geochron. Age Ref.: GOO VOL 1
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
Dec 07, 2005 (A Wilson) - The occurrence lies just to the west of the Newton High Strain Zone that traverses the southeastern part of Newton Township.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic pillowed flow | 1 | Basalt, Fe Tholeiitic | Pillowed | Host |
|---|---|---|---|---|
| Quartz-Feldspar Porphyry | 2 | Quartz Feldspar | Adjacent | |
| Lamprophyre-Unsubdivided | 3 | N/A |
Dec 07, 2005 (A Wilson) - Mineralization is hosted in a pillowed iron tholeiitic basalt sequence, trending northeast which has been intruded by a number of quartz-feldspar porphyries. A hornblende lamprophyre also intrudes the mafic sequence. The porphyry has been emplaced along an east-west shear zone and is disjointed.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Gangue |
Dec 07, 2005 (A Wilson) - The best assay collected from this zone by Dome Exploration was 25.7 g/t Au but other selected grab samples are in the 4 to 5 g/t Au range. Grab samples collected by the OGS in 1985 were: 0.38 g/t Au, 2.7 g/t Au and 0.84 g/t Au. Mineralization occurs in sheared, pyritic carbonatized material adjacent to the porphyry. In the sheared material there are some quartz stringers roughly parallel to the shear and the maximum known width of the sheared material is 6 m. Pyrite is disseminated in the sheared material and can form up to 15% of the rock.
| Rank | Classification |
|---|---|
| 1 | Mesothermal |
| Rank | Characteristic |
|---|---|
| 3 | Disseminated |
| 1 | Sheared |
| 2 | Stockwork |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Unknown | 1 | 260 |
Map - Geology, Swayze greenstone belt, Rush Lake, Ontario
Publication Number: OF3384c Scale: 1:50,000 Date: 1999
Author: Heather, K B; Shore, G T
Publisher Name: Geological Survey of Canada
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 Scale: Date: 1995
Author: Fumerton S.L., Houle K.A.
Publisher Name: Ontario Geological Survey
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