Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI000000000510| Deposit Name(s) | Santa Maria Area 1 - 1988 |
|---|---|
| Deposit Status | occurrence |
| Date Created | 2008-Mar-17 |
| Date Last Modified | 2019-Sep-11 |
| Created By | M A Puumala |
| Revised By | T Pettigrew |
Primary Commodities: gold
Township or Area: Zeemel Lake Area
Latitude: 52° 34' 1.18" Longitude: -90° 22' 17.03"
UTM Zone: 15 Easting: 678150 Northing: 5827350 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53B09SW
Point Location Description: Assessment file map and ddh database
Location Method: data compilation
1986-88: Geophysical and geological surveys and diamond drilling by Santa Maria Resources Ltd.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 29 | 53B09SW0001 | Open |
| 53B09SW0038 | 53B09SW0008 | Open |
Province: Superior
Subprovince: Sachigo
Belt: North Caribou
Terrane: North Caribou
Geological Age: Mesoarchean
Tectonic Assemblage: McGruer - Opapimiskan Unit
| Structure Name | Scale | Strike | Dip | Trend | Plunge |
|---|---|---|---|---|---|
| Fault | regional | 315 | |||
| Stratigraphy And Foliation | regional | 90 |
| Rock Type | Rank | Composition | Texture | Relationship |
|---|---|---|---|---|
| mafic metavolcanics | 1 | contains | ||
| felsic metavolcanics | 2 | contains | ||
| metasedimentary | 3 | near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
|---|---|---|---|---|---|---|---|
| 1 | pyrite | economic | ore | ||||
| 2 | pyrrhotite | economic | ore |
03/17/2008 (M A Puumala) - The Santa Maria Area 1 occurrence is located near the southern boundary of the North Caribou greenstone belt. The area is reported by Huston and Timoshenko (1988) to be underlain by two main supracrustal rock units. These include the predominantly mafic to ultramafic metavolcanic rocks of the Opapimiskan unit of the McGruer assemblage and the clastic metasedimentary Zeemel-Heaton assemblage (Thurston, Osmani and Stone 1991). Stratigraphy and foliation in the area generally strike east (Huston and Timoshenko 1988). Anomalous gold assays were reported from two Santa Maria Resources diamond drill holes (SMZ-87-3 and 4) that were advanced at this location to test geophysical anomalies that had been interpreted to represent structures and/or lithologies with the potential to host gold mineralization (Huston and Timoshenko 1988). Drill hole SMZ-87-3 was reported to have intersected 1.25 m of mafic metavolcanic rocks containing minor quartz carbonate stringers with trace pyrrhotite that assayed 0.54 oz/ton Au. Drill hole SMZ-87-4 encountered felsic metavolcanics mineralized with trace pyrite that assayed 0.015 oz/ton Au over 2.13 m. This mineralized zone is located immediately north of a northwest striking fault that is illustrated in MRD126-REVISED (Ontario Geological Survey 2006).
| Rank | Classification |
|---|---|
| 1 | lode (gold) |
| Rank | Characteristic |
|---|---|
| 1 | sheared |
Book - Northwestern Superior Province: Review and Terrane Analysis, in Geology of Ontario; Ontario Geological Survey, Special Volume 4, Part 1, p. 81-142.
Publication Number: SV04-01 Date: 1991
Author: Thurston, P.C., Osmani, I.A. and Stone, D.
Publisher Name: OGS
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