Mineral Deposit Inventory for Ontario

Ministry of Energy, Northern Development and Mines

Permanent Link to this Record: MDI31E01SE00235

Deposit: MDI31E01SE00235


Mineral Deposit Identification
Deposit Name(s) Fission - 1982, Richardson - 2000, Baycroft - 2000
Related Deposit Type None
Deposit Status prospect
Abandoned Mine Inventory Reference
Date Created 1982-Aug-24
Date Last Modified 2010-May-27
Created By Q Unknown
Revised By C Papertzian


Primary Commodities: fluorite, thorium, uranium


Township or Area: Cardiff

Latitude: 45° 3' 18.22"    Longitude: -78° 11' 30.15"

UTM Zone: 17    Easting: 721124   Northing: 4992904    UTM Datum: NAD83

Resident Geologist District: Southeastern Ontario

NTS Grid: 31E01SE

Point Location Description: Adit symbol just E of property symbol ' 19 ', NW corner of Cardiff Township.

Location Method: conversion from mdi

Source Map: OGS 1957, MAP 1957-1 CARDIFF AND FARADAY TP

Sources Map Scale: 1:25 000

Access Description: From the junction of Hwys 121 and 648 drive 21.28 Km on Hwy 648 to the Old Mumford Road. Turn left and drive 1.28 Km to a sideroad onthe left. Park here (unless 4 x 4 ). The mine is at the end of the road ( 1200 m ). Beware of pits and shafts.

Exploration and Mining History

Originally discovered by W.M. Richardson in 1922. A pit was worked where large uraninite crystals were extracted. 1923: Charles Baycroft opened a 9-m trench near the Richardson pit. 1929 to 1931, subsequent exploration was carried out from a shaft and a number of pits and trenches. 1931-1932: International Radium and Resources Limited built a mill and made test runs in 1933. 1946-1948 & 1955: Fission Mines, Limited performed further surface exploration.


Province: Grenville

Geology Comments

01/18/2000 (C Papertzian) - Mineral location.

Mineral Deposit Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
intermediate intrusive 1 syenite pgmt contains
felsic intrusive 2 pegmatite contains


Deposit Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Habit Description
5 allanite economic ore n/a
10 betafite economic ore n/a
15 euxenite economic ore n/a
20 fluorite economic ore n/a
25 melanocerite economic ore n/a
30 pyrochlore economic ore n/a
35 pyrrhotite economic ore n/a
40 thorite economic ore n/a
45 uraninite economic ore n/a
50 uranophane economic ore n/a
55 uranothorite economic ore n/a
60 zircon economic ore n/a

Site Visit Information

Date: 2010-May-27

Geologist : D Laidlaw

Notes: May 11, 2010: Site visit with Abandonned Mines Coordinator to inspect rehabilitated site. Large crystals of purple fluorite found in waste rock and in outcrop along side of hill. Fine-grained fluorite also occurs in wavy bands with calcite as seen in a large boulder located along the side of the hill near the trail. GPS coordinates taken: NAD 83 17T 721131m E, 4993008m N.

Production Data
Year Tonnes Commodities Commodity Production Reference Comment
1982 0 Mdi POSSIBLE


Book - GSC 1962, ECON GEOL #16, P207

Publication Number: N/A    Date: 1996

Book - GSC 1986, MP 39, P79-81

Publication Number: N/A    Date: 1996

Book - NMI FILE # 506892, 31E/01 U 33

Publication Number: N/A    Date: 1996

Book - OGS 1943, AR VOL 52 PT 2, P83-5

Publication Number: N/A    Date: 1996

Book - OGS 1956, AR VOL 65 PT 6, P56-58

Publication Number: N/A    Date: 1996

Book - OGS 1957, AR VOL 66 PT 3, P66-67

Publication Number: N/A    Date: 1996

Book - OGS 1967, MRC 4, P19-20

Publication Number: N/A    Date: 1996

Book - OGS 1981, OFR 5311, P93-94

Publication Number: N/A    Date: 1996

Book - OGS SMDR # 000171

Publication Number: N/A    Date: 2000

Book - OGS 1914-31, AFRO # 36

Publication Number: N/A    Date: 2000

Book - OGS 1956, AFRO # 118

Publication Number: N/A    Date: 2000

Book - OGS 1988, AFRO # 218

Publication Number: N/A    Date: 2000

Report an Error

We are continuously updating the Mineral Deposit Inventory. If you notice errors in the data please contact us.

Terms of Use

Please review our Terms of Use agreement for this data product.

Ministry Contact Information

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