Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI31C16SE00017

Record: MDI31C16SE00017

General

Mineral Record Identification
Record Name(s) Portland Area - 1939
Related Record Type Simple
Related Record(s)
Record Status Discretionary Occurrence
Date Created 1982-May-25
Date Last Modified 2022-Mar-29
Created By
Revised By

Commodities

Primary Commodities: Marble (Structural Material)



Location

Township or Area: Bastard

Latitude: 44° 45' 40.72"    Longitude: -76° 7' 12.59"

UTM Zone: 18    Easting: 411348   Northing: 4957046    UTM Datum: NAD83

Resident Geologist District: Southern Ontario

NTS Grid: 31C16SE

Point Location Description: General

Location Method: Data Compilation

Access Description: Goudge (1938) sample is of a dolomitic marble adjacent to the CNR line at the south end of Otter lake. Easton (2015) sample is of a dolomitic marble from a roadcut on the west side of Highway 15 by th CNR line at the south end of Otter Lake.



Geology

Province: Grenville

Subprovince: Central Metasedimentary Belt

Terrane: Frontenac

Geological Age: Mesoproterozoic  



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Marble 1 Dolomitic Host

Mineralization

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

Mineralization Comments

Aug 03, 2016 (A Wilson) - The geochemical analysis of the marble is 1.28% SiO2, 0.48% Fe2O3, 0.10% Al2O3, tr Ca4(PO4)2, 55.32% CaCO3. Sample 15RME-0234 from approximately the same location is 0.60% SiO2, 0.25% Fe2O3, 0.30% AL23, tr P2O5m 45.75% LOI, 30.31% CaO, 20.63% MgO.



Mineral Record Details

References

Publication - Limestones of Canada, their occurrence and characteristics, part IV, Ontario

Publication Number: CMB Pub 781 Scale:     Date: 1938

Author: Goudge, M F

Publisher Name: Canada Mines Branch

Location: Tweed RGO


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For detailed information regarding this mineral record please contact the Southern Ontario Resident Geologist District Office