Ontario Geological Survey
Permanent Link to this Record:
MDI52F09SE00010
| Record Name(s) | Dumond - 1936 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-22 |
| Date Last Modified | 2023-Aug-03 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Hyndman
Latitude: 49° 33' 50.07" Longitude: -92° 6' 51.51"
UTM Zone: 15 Easting: 564046.871 Northing: 5490522.749 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F09SE
Point Location Description: Mineral occurrence at surface symbol (Map, GDIF398)
Location Method: Field Visit
Access Description: The Dumond Occurrence is located north of Highway 17, in Hyndman Township, at the southeast corner of claim K.561295. The property is accessible by a narrow gravel road which branches east from the Basket Lake Road, 7.3 km north of its intersection with Highway 17. A narrow bush road branches south from the gravel road, about 3.2 km east of its intersection with the Basket Lake Road, and continues for 4 km to a foot path, which branches east from the road for 600 m to the occurrence.
1936: Discovery of quartz veins by Dumond Mining and Exploration Co. Ltd. The company conducted trenching and sampling. 1981: Staked by A. Glatz (claim K.561295). 1982: Optioned to Lynx-Canada Ltd. who conducted power stripping, geological mapping, and sampling. 1983: Optioned to R.J. Wright (Teck Explorations Ltd.) who conducted geophysical and geological work. 1984: Transferred back to A. Glatz.
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Eagle-Wabigoon-Manitou
Geological Age: Precambrian
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | amphibolitized |
|---|---|---|---|---|
| Felsic Pyroclastic Breccia | 2 | Felsic Pyroclastics | ||
| Vein | 3 | quartz | sugary |
Aug 04, 2022 (Q Unknown) - The Dumond Occurrence is situated dominantly within mafic metavolcanic flows intercalated with thin lenses of intermediate and felsic pyroclastics. The occurrence is a few hundred metres east of the contact between the metavolcanics and dioritic rocks of the Revell Batholith.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Hematite | Economic | Ore | ||||
| 10 | Pyrite | Economic | Ore |
Aug 04, 2022 (Q Unknown) - The Dumond Occurrence consists dominantly of dark green, fine- to medium-grained, amphibolitized, mafic, metavolcanic flows and pyroclastics. The mafic metavolcanics contain abundant biotite and long, black needles of hornblende. A large mass of feldspar porphyry is situated at the north end of a large stripped area at the occurrence. Feldspar porphry dikes extend from this mass and are intersected by quartz-feldspar porphyry dikes. Lithologic contacts are discontinuous, irregular, sheared, and dextrally offset along hairline fractures. Rocks are foliated and sheared 330°/90° with narrow (0.9 m - 1.5 m), fissile, subparallel shear zones occurring along lithologic contacts. Irregular quartz veins are typically 0.3 m wide, strike 328°, and pinch and swell along their strike lengths. The veins consist of rusty, red (hematite staining), granular or "sugary" quartz containing dark green chlorite stringers, and finely disseminated pyrite. Pyrite is commonly associated with the chlorite stringers. Wall rocks are intensely chloritized, sericitized, weakly carbonatized, rusty, and commonly contain disseminated pyrite. A massive, 1.8 m wide unit of extremely siliceous rock, containing tiny quartz phenocrysts, is situated along the east edge of the stripped area at the occurrence. The unit of felsic rock strikes 350° and may be a dike, however. Teck Explorations Ltd. mapped it as a rhyolitic flow. The rock is intensely sericitized, pyretic, gossan-stained, and hosts narrow, boudinaged, and Z-folded milk white quartz veins with red hematite staining. Three 0.3 m wide chip samples taken by the author across one of the larger quartz veins, situated at the southeast corner of the stripped area at the ccurrence, assayed 0.02, 0.12, and 0.17 ounce gold per ton. The quartz vein that was sampled is boudinaged into long sinuous lenses of quartz. Two grab samples, taken by Lynx-Canada Ltd., from a zone of thin white quartz stringers assayed 0.074 and 0.132 ounce gold per ton (Assessment Files,Resident Geologist's Office, Kenora). A 0.6 m wide chip sample, taken by the author across a rusty zone of sheared, chloritic, weakly carbonatized, amphibolitized, mafic metavolcanics assayed 0.25 ounce gold per ton. This shear zone gives consistently encouraging gold assays (A. Glatz, prospector. Dryden, personal communication, 1985, 1987). Grab samples taken by the author from a small test pit sunk on the rhyolitic dike (?) at the east end of the occurrence did not assay significant amounts of gold. Chip samples from pyritic, rusty, rhyolite schist bands, taken by J. Satterly in the vicinity of the Dumond Prospect, assayed 0.16 ounce gold per ton across 2 ft., and 4.35 ounces gold per ton across 4 inches (Assessment Files, Resident Geologist's Office, Kenora). Satterly (1960) described the rhyolite schist as occurring in lenticular bands ranging from 4 inches to 20 ft. wide and striking northwest. (OFR 5723, p. 185-186)
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Irregular | 1.5 | 330 | 90 |
Book - Northern Miner 36-10-22
Publication Number: NMINER Date: 1996
Author:
Publisher Name: Northern Miner
Location:
Book - Northern Miner 37-04-08 p. 27
Publication Number: NMINER Date: 1996
Author:
Publisher Name: Northern Miner
Location:
Part - Geology of the Dyment area
Publication Number: ARV69-06 Date: 1997
Author: Satterly J.
Publisher Name: Ontario Dept. of Mines
Location:
Article - Kenora Resident Geologist's area, Northwestern Region
Publication Number: MP134.001 Page: 19 Date: 1997
Author: Blackburn C.E., Hailstone M.H., Parker J.R., Storey C.C.
Publisher Name: Ontario Geological Survey
Location:
Mono - Geology, gold mineralization and property visits in the area investigated by the Dryden-Ignace economic geologist, 1984-1987
Publication Number: OFR5723 Page: 185-186 Date: 1989
Author: Parker J.R.
Publisher Name: Ontario Geological Survey
Location:
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