Ontario Geological Survey
Permanent Link to this Record:
MDI31E12NE00016
| Record Name(s) | Magnetawan Quarry - 1989 |
|---|---|
| Related Record Type | Simple |
| Record Status | Prospect |
| Date Created | 1991-Mar-18 |
| Date Last Modified | 2022-Jan-05 |
| Created By | Q Unknown |
| Revised By | A Wilson |
Primary Commodities: Gneiss
Township or Area: Chapman
Latitude: 45° 40' 9.04" Longitude: -79° 36' 42.76"
UTM Zone: 17 Easting: 608124.001 Northing: 5058228.997 UTM Datum: NAD83
Resident Geologist District: Sudbury
NTS Grid: 31E12NE
Point Location Description: Precise
Location Method: AMIS Site Visit
Access Description: North side of highway 522, 0.8km east of the Distress River bridge (2.4km east of highway 510 and 520 intersection in Magnetewan). The main pit is located 65m ne of road on northeastern edge of outcrop.
Province: Grenville
Subprovince: Central Gneiss Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Paragneiss | 1 | Contains |
|---|
Feb 16, 2011 (A Wilson) - The rock consists of interlayered fine- to medium-grained, dark and pale grey and lesser fine-grained pink paragneiss, with small amounts of black amphibolite. In places, epidote occurs in layers parallel to the foliation and on cross-cutting joint surfaces. Split surfaces are mottled to lineated, grey, pink, pinkish-white and dark green. Foliation is well developed parallel to the compositional bands, and a distinct mineral lineation is also present. The foliation and compositional banding are steeply dipping to vertical, striking from 127 to 145°. Rounded pink feldspar porphyroclasts scattered along the traces of white laminae suggest that some layers are sheared pegmatites. Garnet porphyroblasts up to 5 mm in diameter are disseminated through some bands. Most of the rock is grey with lesser pink and black stone.
Feb 16, 2011 (A Wilson) - The largest quarried area measures about 250 square metres but there are several additional small pits. Approximately 500 cubic metres of stone has been quarried. There appears to be an area of about 20,000 sq. metres of potentially quarriable rock rising some 6 or 7 metres above wet land to the north. It is covered by only a few inches of soil. Given thevertical foliation and banding of the rock at this site, the flagstone probably extends to some depth.
| Rank | Classification |
|---|---|
| 1 | Dimension Stone |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1991 | 1300 | OFR 5760 p. 178 |
Mono - Gneisses of the Parry Sound-Muskoka area: flagstone resources
Publication Number: OFR5725 Scale: Date: 1989
Author: Fouts C.R., Marmont C.
Publisher Name: Ontario Geological Survey
Mono - Building stone, feldspar and limestone resources in central Ontario
Publication Number: OFR5760 Scale: Date: 1991
Author: Marmont C.
Publisher Name: Ontario Geological Survey
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