Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31F07NW00008

Record: MDI31F07NW00008

General

Mineral Record Identification
Record Name(s)	Colton Lake - 1981, OGS Sample MA3-1 - 1979
Related Record Type	Simple
Record Status	Occurrence
Date Created	1986-Jun-16
Date Last Modified	2022-Jan-05
Created By	Q Unknown
Revised By	A Wilson

Commodities

Primary Commodities: Marble (high purity/flux)

Location

Township or Area: Admaston

Latitude: 45° 26' 5.88" Longitude: -76° 51' 43.61"

UTM Zone: 18 Easting: 354352.002 Northing: 5032957.999 UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31F07NW

Point Location Description: approximate

Location Method: Data Compilation

Access Description: Intersection of the road in concession IX with a cottage road to Colton Lake. The area can be reached by proceeding north from Shamrock on Highway 132 to the location point.

Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Geological Age: Mesoproterozoic

Lithology

Lithology Data
Rock Type	Rank	Composition	Texture	Relationship
Marble	1	Calcitic		Host
Gneiss-Unsubdivided	2	Granite		Adjacent

Lithology Comments

Aug 17, 2011 (A Wilson) - The marble is white, calcitic and medium to coarse grained. Minor amounts of quartz, garnets, phlogopite and pyrite were observed. The widest unit is 60 m.

Mineralization Comments

Aug 17, 2011 (A Wilson) - A typical analysis from the OGS study published in 1981 is: MA-3-1 1.28% SiO2, 0.3% Fe2O3, 0.3% Al2O3, 1.8% MgO, 52.4% CaCO with a brightness of 81.2

Mineral Record Details