Ontario Geological Survey
Permanent Link to this Record:
MDI53B09SW00005
| Record Name(s) | Karl Zeemel Zone 2 - 1985 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1995-May-23 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Zeemel Lake Area
Latitude: 52° 34' 34.21" Longitude: -90° 16' 23.24"
UTM Zone: 15 Easting: 684770.57 Northing: 5828617.61 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53B09SW
Point Location Description: Transfer
Location Method: Conversion from MDI
1981-82: Geological and geophysical surveys by Canadian Nickel Company. 1985-1988: Geological and geophysical surveys and diamond drilling by Power Explorations Inc. 1997: Placer Dome Canada conducted a ground magmetometer survey.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.11892 | 53B09SW0002 | 53B09SW0002 |
| 2.5417 | 53B09SW9413 | 53B09SW9413 |
| 53B09SW0037 | 53B09SW0011 | 53B09SW0011 |
| 53B09SE0011 | 53B09SW0027 | 53B09SW0027 |
| 2.17312 | 53B09SE0012 | 53B09SE0012 |
Province: Superior
Subprovince: Berens River
Terrane: North Caribou
Domain: North Caribou Core
Belt: North Caribou
Geological Age: Mesoarchean
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Contains |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | |||
| Vein | 3 | Quartz | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore | ||||
| 4 | Arsenopyrite | Economic | Ore | ||||
| 5 | Hematite | Economic | Ore | ||||
| 6 | Magnetite | Economic | Ore | ||||
| Silica | Alteration | Silicification | 1 | Unknown | Disseminated |
Mar 17, 2008 (Mark Puumala) - Huston (1988) indicated that the Karl-Zeemel Zone 2 showing (along with the closely-related Zone 1, 5, 6 and 7 showings) is located in close proximity to the boundary between the predominantly mafic to ultramafic metavolcanic Opapimiskan unit of the McGruer assemblage, and the metasedimentary Zeemel-Heaton assemblage (based on nomenclature of Thurston, Osmani and Stone (1991)). The metasedimentary rock assemblage, which is located to the north of the mineralized zone, consists largely of feldspathic wacke, quartz wacke and pelitic metasediments, with lesser amounts of quartz/feldspathic arenite and polymictic conglomerate (Huston 1988). This occurrence is hosted by the metavolcanic rock-dominated sequence immediately south of the metasedimentary rock contact. The metavolcanic assemblage is approximately 650 m wide and is dominated by fine to medium grained mafic to ultramafic metavolcanics. The metavolcanics are interbedded with several bands of chert and oxide facies iron formation. Metasedimentary rocks of the Zeemel-Heaton assemblage are also present to the south of the metavolcanics. Mapping by Huston (1988) indicates that bedding and foliation in the area of this showing are generally subparallel, striking approximately 300 with near-vertical dip. Huston (1988) also reports the presence of folds with axes that consistently plunge 18 to 20 degrees to the northwest. Shearing is also reported to be common in the metavolcanics and banded iron formation/chert units, with shearing planes generally subparallel to the regional foliation and fold axes. Huston (1988) described the Karl-Zeemel Zone 2 occurrence as a weakly-mineralized iron formation containing quartz pods and veins. Trenching of this zone produced numerous anomalous gold values, with the most notable including a grab sample assay of 15 321 ppb Au, and a 0.76 m channel sample that assayed 1012 ppb Au (Huston 1988). Power Explorations also advanced four diamond drill holes (KZ-87-2, 3, 5 and 7) to test this mineralized zone. However, Huston (1988) indicated that only drill hole KZ-87-2 encountered the Zone 2 mineralization, with assays of up to 0.074 oz/ton Au (unknown sample interval) reported from sheared and silicified iron formation containing up to 5% sulphides (pyrrhotite, pyrite, chalcopyrite and arsenopyrite). Diamond drill holes KZ-87-2 and 3 also encountered occurrence-grade mineralization in mafic metavolcanics that were encountered above (i.e., immediately to the north of) the mineralized iron formation. Significant assays from the mafic metavolcanics included 0.039 oz/ton Au over 1.52 m in KZ-87-3 from mafic metavolcanics containing narrow pyrrhotite lenses, and 0.028 oz/ton Au over 0.76 m in KZ-87-2 from silicified mafic metavolcanics mineralized with trace arsenopyrite, pyrite and hematite (Huston 1988).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 2 | Sheared |
| 1 | Stratabound |
Article - Northwestern Superior province: review and terrane analysis
Publication Number: SV04-01.005 Scale: Date: 1997
Author: Thurston P.C., Osmani I.A., Stone D.
Publisher Name: Ontario Geological Survey
Location:
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