Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52F03SE00005

Record: MDI52F03SE00005

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Vista Lake Area

Latitude: 49° 6' 41.03"    Longitude: -93° 0' 33.69"

UTM Zone: 15    Easting: 499317.118   Northing: 5439839.352    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52F03SE

Point Location Description: Transfer

Location Method: Conversion from MDI

Access Description: The Angove property is located in the southwest part of Vickers Lake about midway between Dryden and Fort Frances in Northwestern Ontario. Convenient access to the claims is provided by boat or ATV from Highway 502, the paved all-weather road between Dryden and Ignace. A boat landing is located on the southeast shore of Vickers Lake. The landing is connected to Highway 502 by a 250 metre trail. The property is 10 minutes by boat from the landing. This route provides the most convenient and rapid access to the northern part of the claims. A logging road leads north from Highway 502 from a point 1.3 kilometres southwesterly of the trail to the landing. This logging road is negotiable by truck for a distance of 3 kilometres. From this point a skidder road suitable for ATV's continues northerly for an additional 2 kilometres to the vicinity of 5S, 2E on the claim block. A tractor road continues northeasterly to the main showing. This road was pushed in by a "muskeg' tractor mounting a backhoe for a stripping programme around the Main Showing. This road is not suitable for ATV's due to numerous trees on and across the road. (J.W. Redden, Assessment File F/3 SE C-1, p.1, Kenora Resident Geologist Office)

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Terrane: Western Wabigoon

Belt: Eagle-Wabigoon-Manitou

Geological Age: Precambrian  

Lithology

Lithology Comments

Feb 25, 2010 (D Scholtz) - Mafic Volcanics: Most of the bedrock consists of Precambrian volcanics altered to various chlorite-bearing rocks. They can be subdivided into several rock types. Massive Mafic Volcanics (mmv): This rock type is the name applied to all mafic volcanics which cannot be differentiated into more precise categories. The rocks are massive; dark green to black and fine grained. No internal structure is discernible. It is considered that most of the MMV represents mafic tuffaceous rocks. Massive Mafic Tuff (mmt): The tuff is characterized by the presence of a faint layering and/or a rough texture. The rough texture is due to deeper weathering of the groundmass leaving the lapilli standing out in relief. Massive Mafic Flows (mmf): The flows have been identified primarily on the basis of their coarser grain size. Though generally still fine grained. The granular crystalline nature of the rock is apparent. The rock is massive without visible internal structures. Mafic Agglomerate (m.agg): The predominant rock in this class consists of 5 - 20% dark grey to black felsic fragments 1 to 5cm across in a chloritic matrix. The felsic fragments form raised surfaces, often polished, in outcrop. In some outcrops the felsic material appears to have been originally in layers and the layers later deformed to form the present texture. If this is the case then the rock would more correctly be called a boudinaged tuffaceous sediment. Weak shearing is evident in many of the m.agg exposures. This shearing is considered due to differential movement between the fragments and the groundmass during regional compression. This shearing is not in itself related to later shearing associated with mineralization. Several small isolated exposures of agglomerate containing mafic to intermediate fragments in a mafic groundmass were noted in the field. This rock type is volumetrically minor and is not shown separately on the map. Massive Pillowed Flows (mpf): This rock consists of pillow lavas and similar rocks. The similar rocks contain ameboid shaped structures rather than pillows. Some of the ameboid structures may be deformed pillows however in most exposures it is apparent that the ameboid structures are of primary origin. Massive Amygdaloidal Flows (mat): This rock is similar to mmf with the presence of several percent of 1 -5 mm ovoid amygdales. The amygdale filling is generally carbonate, occasionally quartz. Felsic/Intermediate Tuff (fit): This rock type was only encountered in a very limited area on line 12N. The rock is massive and pale brown in colour. A portion of the rock could be classified as crystal lithic tuff. The maximum thickness exposed was only 2m. It is considered to be a volumetrically insignificant rock type. Gabbro (gb): The gabbro underlies portions of the western part of the claims. The rock is dark grey to black. The colour is darker as the ferromagnesian mineral content increases. Composition ranges from 60 - 80% pyroxene and 40 - 20% feldspar. Up to 1% pyrrhotite may be disseminated in the rock. Occasional hairline cracks in the rock contain stringers of pyrrhotite. The rock is sometimes easily differentiated from the mmf by a coarser grain size and a much 'fresher' appearance. Though no contacts were found, the fresher appearance is believed due to the younger age of the rock. Gabbro Porphyry (gbpor): This rock is the same as the gabbro (gb) with the inclusion of 2 to 5% feldspar phenocrysts. The phenocrysts are generally distinct on both fresh and weathered surfaces. (J.W. Redden, Assessment File F/3 SE C-1, p.1-10, Kenora Resident Geologist Office)

Mineralization

Mineralization Comments

Feb 25, 2010 (C Ravnaas) - The Angove Showing has not yet been seen in bedrock. The available data has been collected from the examination of float and debris uncovered in a valley, part of a lineament. Quartz veins are associated with an intensely sheared zone striking approximately 035 - 215 degrees. Dip is unknown. The gold occurs in quartz veins up to 30 cm thick (based on the size of float in the lineament). Up to several percent pyrite is present in the quartz, usually along chloritic slips and fractures in the quartz. Several percent of chalcopyrite was also present in one large piece of quartz float. These slips and fractures appear to represent later movement in the plane of the vein. They may represent stages of movement forming dilation zones followed by the introduction of additional quartz along pre-existing zones of weakness. The slips and fractures would also form the conduits for the mineralizing solutions. Gold values to 0.21 oz./ton Au have been returned from this quartz vein material. This lineament appears to have considerable lateral extent. To the north the lineament continues into Vickers Lake, some 300 m from the showing. Further to the north across the bay of Vickers Lake are several lineaments. One of these is likely the extension of that hosting the showing. To the south the lineament appears to bifurcate at several locations. A lineament with the same trend is still discernible on several lines to the south indicating the lineament continues for at least 4-500m to the south. Further south the land is rather uniformly flat, thus the lineament could not be followed on the ground. An east - west striking, 0.3 m thick, quartz vein is exposed in a 3m cliff on the shore of Grave Lake. The exposure is about 20m north of line 4S, 3+50W. The vein consists of mainly glassy to translucent white quartz. The vein contains several slips parallel to the plane of the vein, all of which contain smears and disseminations of chalcopyrite and pyrite. The massive appearing quartz between the slips is also fractured. Chalcopyrite is present in these fractures. Malachite is present on some of the weathered surfaces. Analyses of two samples from this vein returned 14 and 138 ppb Au. The vein is covered by overburden at the top of the cliff and to the east. Two quartz boulders (minimum dimension of 0.5 m) are present near the shore, 3 to 5 m south of the assumed location of the quartz vein in the cliff. The quartz is all translucent white, with only a trace of pyrite and rust. The source of the float is unknown. The character-of the quartz suggests a source different from the vein in the cliff. (J.W. Redden, Assessment File F/3 SE C-1, p.1-10, Kenora Resident Geologist Office)

Mineral Record Details

Report an Error

We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.

Terms of Use

Please review our Terms of Use agreement for this data product.

Ministry Contact Information

For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office