Ontario Geological Survey
Permanent Link to this Record:
MDI41J02NE00003
| Record Name(s) | Pronto Mine - 1953 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1991-Sep-01 |
| Date Last Modified | 2022-Oct-12 |
| Created By | |
| Revised By |
Primary Commodities: Uranium
Township or Area: Long
Latitude: 46° 12' 36.74" Longitude: -82° 42' 22.09"
UTM Zone: 17 Easting: 368392.001 Northing: 5118818.003 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 41J02NE
Point Location Description: Shaft
Location Method: AMIS Site Visit
Access Description: 1.2 kilometres west of east boundary of Long Township, 1.1 kilometres north of highway 17.
1948-49: Aime Breton and K. Gunterman - discovery of radioactivity. 1952-53: Franc R. Joubin - DD-410-35,541m (surface), UGD-363-5513 m 1953-1960: Rio Algom Mines Ltd. (Pronto Division) - mine in operation. 1960-1970: mill converted to process copper ore from Pater Mine.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| LONG 0021 | 41J02NE0026 | 41J02NE0026 |
| LONG 0022 | 41J02NE0008 | 41J02NE0008 |
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Conglomerate | 1 | Polymitic | Host |
|---|---|---|---|---|
| Diabase | 2 | Diabase | Intrudes |
May 03, 2012 (P Beach) - The orebody is in a reef of quartz pebble conglomerate at the base of the Matinenda Formation. It strikes east and dips and dips 15 to 20 S and unconformably overlies the Early Precambrian granite. Several large diabase dikes cut the orebody and are locally affected by albite, chlorite and carbonate alteration.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Brannerite | Economic | Ore | ||||
| 2 | Uraninite | Economic | Ore | ||||
| 3 | Monazite | Economic | Ore | ||||
| 4 | Thucholite | Economic | Ore | ||||
| 5 | Uranophane | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| Albite | Alteration | Albitic | 1 | ||||
| Chlorite | Alteration | Chloritic | 2 | ||||
| Carbonate | Alteration | Carbonatization | 3 |
May 03, 2012 (A Wilson) - The typical ore is pyritic, uraniferous, quartz-pebble conglomerate, generally 6 to 10 feet thick and locally 15 to 20 feet thick. The thorium content here is the lowest of all Elliot Lake Mines.
| Rank | Classification |
|---|---|
| 1 | Paleoplacer |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Regular | 1067 | 2.29 | 305 |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Pronto | 1966 | Unclassified | 272155 | MR223 | 300,000 tons U3O8, unknown grade | Uranium 0 NA |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1960 | 2054233 |
Uranium 4643835 Pounds |
MDC25 p. 36 | as of 1960, production was 4,643,835 lbs U3O8 from 2,264,404 tons milled; average mill head from 2.15 to 2.44 lbs U3O8 |
Map - Long and Spragge townships and part of Indian Reserve No. 7, Algoma District
Publication Number: M2186 Scale: 1:31,680 Date: 1970
Author: Abraham E.M., Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Canadian deposits of uranium and thorium; Geological Survey of Canada, Economic Geology Series 16
Publication Number: GSC EconGeol 16 Page: 141 Date: 1952
Author: Lang, A.H.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102450
Mono - Uranium and thorium deposits of northern Ontario
Publication Number: MDC009 Page: 8-9 Date: 1968
Author: Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Spragge area, District of Algoma
Publication Number: R076 Page: 74-86 Date: 1970
Author: Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Uranium and thorium deposits of northern Ontario
Publication Number: MDC025 Date: 1984
Author: Robertson J.A., Gould K.L.
Publisher Name: Ontario Geological Survey
Location:
Book - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Page: 72 Date: 1985
Author: Rose, D. G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
Book - Structural Geology of Canadian Ore Deposits, p. 324-339
Publication Number: Date: 1957
Author: S.W. Holmes
Publisher Name:
Location:
Book - Canadian Institute for Mining and Metallurgy 1986 Special Volume 33 p. 36-43
Publication Number: CIMM V 33 Date: 1986
Author: J.A. Robertson,
Publisher Name: CIMM
Location:
Publication - Canadian Mineral Deposits not Being Mined in 1989
Publication Number: MR 223 Date: 1990
Author:
Publisher Name: Energy Mines and Resources Canada
Location:
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