Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000001258

Record: MDI000000001258

General

Mineral Record Identification
Record Name(s)	OGS Sample H-447 - 1977, Grattan Township Occurrences - 1977, Lake Clear Occurrences - 2001
Related Record Type
Record Status	Occurrence
Date Created	2011-Jun-01
Date Last Modified	2022-Jan-05
Created By	A Wilson
Revised By	A Wilson

Commodities

Primary Commodities: Thorium

Secondary Commodities: Uranium

Location

Township or Area: Grattan

Latitude: 45° 29' 42.8" Longitude: -77° 9' 30.86"

UTM Zone: 18 Easting: 331343.999 Northing: 5040231.999 UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31F06NE

Point Location Description: approximate

Location Method: Data Compilation

Exploration History

1977: Ontario Geological Survey - sampling and analysis

Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Geological Age: Mesoproterozoic

Lithology

Lithology Data
Rock Type	Rank	Composition	Texture	Relationship
Sandstone	1	Arenite	Gneissic	Host
Syenite	2			Adjacent

Lithology Comments

Jun 10, 2011 (A Wilson) - The showing occurs is associated with feldspathic arenites near the margin of an alkalic intrusive

Mineralization

Mineralization and Alteration
Rank	Mineral Name	Class	Economic Mineral Type	Alteration Mineral Type	Alteration Ranking	Alteration Intensity	Alteration Style
1	Uranothorite	Economic	Ore

Mineralization Comments

Jun 10, 2011 (A Wilson) - A grab sample collected by Themistocleous returned: 0.00075% U3O8, 5.82% K2O, and 2590 ppm Th. Grab sample H-590B collected from Concession 35 Lot 18 returned 0.02% U3O8, 3.00% K2O, and 22.5% Th.

Mineral Record Details

Characteristics
Rank	Characteristic
1	Disseminated