Ontario Geological Survey
Permanent Link to this Record:
MDI31E12SW00004
| Record Name(s) | Lorimer Lake Quarry - 1969, Cononaco Mines Ltd. Quarry - 1969 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1991-Feb-02 |
| Date Last Modified | 2022-Feb-18 |
| Created By | |
| Revised By |
Primary Commodities: Marble (high purity/flux)
Township or Area: Hagerman
Latitude: 45° 33' 27.75" Longitude: -79° 55' 18.58"
UTM Zone: 17 Easting: 584148.003 Northing: 5045473.002 UTM Datum: NAD83
Resident Geologist District: Sudbury
NTS Grid: 31E12SW
Point Location Description: Precise
Location Method: AMIS Site Visit
Access Description: From Ahmic Harbour, take highway 124/520 southwest for 18.3km to Swords Road. Turn west and follow for 0.3km to the old bush road. Located just north of the marina, turn south and follow road around to the quarry ~200m.
1969: Cononaco Mines Ltd. - block extraction for high purity ground calcite; bulk sampling
Province: Grenville
Subprovince: Central Gneiss Belt
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Marble | 1 | Is |
|---|---|---|---|---|
| Gneiss-Unsubdivided | 2 | Adjacent |
Dec 06, 2011 (A Wilson) - Fairly pure calcitic marble, with less than 5% of disseminated silicate minerals occurs as narrow bands interlayered with the predominate impure limestone. One wider band of clean limestone (3-4 m) can be traced northward from the main pit for approximately 60 m. When almost free of disseminated non-carbonate minerals, the rock is massive, equigranular and commonly weathers and disintegrates to a buff-coloured sand. This is most noticeable adjacent to inclusions of meta-diabase, and in the cores of isoclinal folds. A variety of inclusions occur within the marble band. Individual inclusions range up to 30 m long and 10 m wide. Most of these inclusions are lozenge-shaped and many of the smaller inclusions are tablular and contorted. The inclusions are typically mafic gneiss, scapolitic gneiss, granite and syenite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Calcite | Economic | Ore | ||||
| 2 | Graphite | Economic | Gangue |
Dec 06, 2011 (A Wilson) - Calcite occurs as interlocking grains ranging from 2-5mm in size. Marmont and Johnston observed 1-2% disseminated flake graphite within a 3-4 m wide band of pure marble. Silicate minerals are disseminated evenly or in vague bands through the marble. The most common silicates are chondrodite and serpentinized olivine, and less abundant diopside, spinel, magnetite, muscovite, phlogopite and graphite. Small ice-blue apatite grains were also found in the main pit. Grab samples collected by the OGS from the pit returned the following analyses: 86 CCM 0034 - 43.60% carbonate CO2, 53.30% CaO, 1.80% MgO, 0.04% Fe2O3, 0.01% MnO, 1025 ppm Sr with a neutralizing value of 99.97. 86 CCM 00347- 43.20% carbonate CO2, 53.00% CaO, 1.80% MgO, 0.14% Fe2O3, 0.01% MnO, 984 ppm Sr with a neutralizing value of 99.07.
| Rank | Classification |
|---|---|
| 1 | Industrial |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1969 | 32658 |
Marble (high purity/flux) |
OFR5425 p. 184 |
Mono - Mineral deposits studies in the Huntsville-Parry Sound-Powassan area, a progress report
Publication Number: OFR5647 Scale: Date: 1987
Author: Marmont C., Johnston M.
Publisher Name: Ontario Geological Survey
Location:
Part - The limestones of Ontario
Publication Number: ARV13-02 Scale: Date: 1998
Author: Miller W.G.
Publisher Name: Ontario Bureau of Mines
Location:
Mono - Building stone, feldspar and limestone resources in central Ontario
Publication Number: OFR5760 Scale: Date: 1991
Author: Marmont C.
Publisher Name: Ontario Geological Survey
Location:
Mono - Annual report on mining operations in Ontario during calendar year 1969
Publication Number: ARV79 Scale: Date: 1998
Author: Riddell G.S.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
MonoMap - Industrial minerals of the Algonquin region
Publication Number: OFR5425 Scale: Date: 1983
Author: Martin W.
Publisher Name: Ontario Geological Survey
Location:
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Sudbury Resident Geologist District Office