Ontario: aeromagnetic maps of carbonatite

THESE TERMS GOVERN YOUR USE OF THIS DOCUMENT
Your use of this Ontario Geological Survey document (the “Content”) is governed by the
terms set out on this page (“Terms of Use”). By downloading this Content, you (the
“User”) have accepted, and have agreed to be bound by, the Terms of Use.
Content: This Content is offered by the Province of Ontario’s Ministry of Northern Development and
Mines (MNDM) as a public service, on an “as-is” basis. Recommendations and statements of opinion
expressed in the Content are those of the author or authors and are not to be construed as statement of
government policy. You are solely responsible for your use of the Content. You should not rely on the
Content for legal advice nor as authoritative in your particular circumstances. Users should verify the
accuracy and applicability of any Content before acting on it. MNDM does not guarantee, or make any
warranty express or implied, that the Content is current, accurate, complete or reliable. MNDM is not
responsible for any damage however caused, which results, directly or indirectly, from your use of the
Content. MNDM assumes no legal liability or responsibility for the Content whatsoever.
Links to Other Web Sites: This Content may contain links, to Web sites that are not operated by MNDM.
Linked Web sites may not be available in French. MNDM neither endorses nor assumes any
responsibility for the safety, accuracy or availability of linked Web sites or the information contained on
them. The linked Web sites, their operation and content are the responsibility of the person or entity for
which they were created or maintained (the “Owner”). Both your use of a linked Web site, and your right
to use or reproduce information or materials from a linked Web site, are subject to the terms of use
governing that particular Web site. Any comments or inquiries regarding a linked Web site must be
directed to its Owner.
Copyright: Canadian and international intellectual property laws protect the Content. Unless otherwise
indicated, copyright is held by the Queen’s Printer for Ontario.
It is recommended that reference to the Content be made in the following form: <Author’s last name>,
<Initials> <year of publication>. <Content title>; Ontario Geological Survey, <Content publication series
and number>, <total number of pages>p.
Use and Reproduction of Content: The Content may be used and reproduced only in accordance with
applicable intellectual property laws. Non-commercial use of unsubstantial excerpts of the Content is
permitted provided that appropriate credit is given and Crown copyright is acknowledged. Any substantial
reproduction of the Content or any commercial use of all or part of the Content is prohibited without the
prior written permission of MNDM. Substantial reproduction includes the reproduction of any illustration or
figure, such as, but not limited to graphs, charts and maps. Commercial use includes commercial
distribution of the Content, the reproduction of multiple copies of the Content for any purpose whether or
not commercial, use of the Content in commercial publications, and the creation of value-added products
using the Content.
Contact:
FOR FURTHER
INFORMATION ON
PLEASE CONTACT:
The Reproduction of
Content
MNDM Publication
Services
The Purchase of
MNDM Publications
MNDM Publication
Sales
Crown Copyright
Queen’s Printer
BY TELEPHONE:
Local: (705) 670-5691
Toll Free: 1-888-415-9845, ext.
5691 (inside Canada,
United States)
Local: (705) 670-5691
Toll Free: 1-888-415-9845, ext.
5691 (inside Canada,
United States)
Local: (416) 326-2678
Toll Free: 1-800-668-9938
(inside Canada,
United States)
BY E-MAIL:
[email protected]
[email protected]
[email protected]
LES CONDITIONS CI-DESSOUS RÉGISSENT L'UTILISATION DU PRÉSENT DOCUMENT.
Votre utilisation de ce document de la Commission géologique de l'Ontario (le « contenu »)
est régie par les conditions décrites sur cette page (« conditions d'utilisation »). En
téléchargeant ce contenu, vous (l'« utilisateur ») signifiez que vous avez accepté d'être lié
par les présentes conditions d'utilisation.
Contenu : Ce contenu est offert en l'état comme service public par le ministère du Développement du Nord
et des Mines (MDNM) de la province de l'Ontario. Les recommandations et les opinions exprimées dans le
contenu sont celles de l'auteur ou des auteurs et ne doivent pas être interprétées comme des énoncés
officiels de politique gouvernementale. Vous êtes entièrement responsable de l'utilisation que vous en faites.
Le contenu ne constitue pas une source fiable de conseils juridiques et ne peut en aucun cas faire autorité
dans votre situation particulière. Les utilisateurs sont tenus de vérifier l'exactitude et l'applicabilité de tout
contenu avant de l'utiliser. Le MDNM n'offre aucune garantie expresse ou implicite relativement à la mise à
jour, à l'exactitude, à l'intégralité ou à la fiabilité du contenu. Le MDNM ne peut être tenu responsable de tout
dommage, quelle qu'en soit la cause, résultant directement ou indirectement de l'utilisation du contenu. Le
MDNM n'assume aucune responsabilité légale de quelque nature que ce soit en ce qui a trait au contenu.
Liens vers d'autres sites Web : Ce contenu peut comporter des liens vers des sites Web qui ne sont pas
exploités par le MDNM. Certains de ces sites pourraient ne pas être offerts en français. Le MDNM se
dégage de toute responsabilité quant à la sûreté, à l'exactitude ou à la disponibilité des sites Web ainsi reliés
ou à l'information qu'ils contiennent. La responsabilité des sites Web ainsi reliés, de leur exploitation et de
leur contenu incombe à la personne ou à l'entité pour lesquelles ils ont été créés ou sont entretenus (le
« propriétaire »). Votre utilisation de ces sites Web ainsi que votre droit d'utiliser ou de reproduire leur
contenu sont assujettis aux conditions d'utilisation propres à chacun de ces sites. Tout commentaire ou toute
question concernant l'un de ces sites doivent être adressés au propriétaire du site.
Droits d'auteur : Le contenu est protégé par les lois canadiennes et internationales sur la propriété
intellectuelle. Sauf indication contraire, les droits d'auteurs appartiennent à l'Imprimeur de la Reine pour
l'Ontario.
Nous recommandons de faire paraître ainsi toute référence au contenu : nom de famille de l'auteur, initiales,
année de publication, titre du document, Commission géologique de l'Ontario, série et numéro de
publication, nombre de pages.
Utilisation et reproduction du contenu : Le contenu ne peut être utilisé et reproduit qu'en conformité avec
les lois sur la propriété intellectuelle applicables. L'utilisation de courts extraits du contenu à des fins non
commerciales est autorisé, à condition de faire une mention de source appropriée reconnaissant les droits
d'auteurs de la Couronne. Toute reproduction importante du contenu ou toute utilisation, en tout ou en partie,
du contenu à des fins commerciales est interdite sans l'autorisation écrite préalable du MDNM. Une
reproduction jugée importante comprend la reproduction de toute illustration ou figure comme les
graphiques, les diagrammes, les cartes, etc. L'utilisation commerciale comprend la distribution du contenu à
des fins commerciales, la reproduction de copies multiples du contenu à des fins commerciales ou non,
l'utilisation du contenu dans des publications commerciales et la création de produits à valeur ajoutée à l'aide
du contenu.
Renseignements :
POUR PLUS DE
RENSEIGNEMENTS SUR
VEUILLEZ VOUS
ADRESSER À :
la reproduction du
contenu
Services de
publication du MDNM
l'achat des
publications du MDNM
Vente de publications
du MDNM
les droits d'auteurs de
la Couronne
Imprimeur de la
Reine
PAR TÉLÉPHONE :
Local : (705) 670-5691
Numéro sans frais : 1 888 415-9845,
poste 5691 (au Canada et aux
États-Unis)
Local : (705) 670-5691
Numéro sans frais : 1 888 415-9845,
poste 5691 (au Canada et aux
États-Unis)
Local : 416 326-2678
Numéro sans frais : 1 800 668-9938
(au Canada et aux
États-Unis)
PAR COURRIEL :
[email protected]
[email protected]
[email protected]
^s
s
.f
fc
^
'(n
56 0 00
/A
A
^
Ontario Department of Mines
and Northern Affairs
a
^
PRELIMINARY MAP No.P.452 (REVISED)
s
S
\
^-/ /^?
ffliW^
fflm
^ - j.i-\*
g;
\
\
x
r
y.-?*.
LAKE
NEMEGOSENDA LAKE
o t" Sudbury
223'G. 2233C
District of Kenora
(Particia Portion.)
r, 3693C. 3684C. 3692G
V,
s
si
MARGINAL
54 045'
CARB
NISKIBI LAKE
DIsLrlcL ul Ktiiurj
(Patricia Portion)
AEROMAGNETIC MAPS OF
CARBONATITE-ALKALIC COMPLEXES
IN ONTARIO
In the last ten years carbonatite-alkalic complexes have become Increasingly
important as producers or potential sources of niobium, rare-earths, uranium,
thorium, zirconium t phosphate, vermiculite, iron, titanium, copper, and nickel.
In many complexes the orebodies are very large. Three of the more Important
world producers are: Palabora T Transvaal (see Table 1) containing 315,000,000
tons of ore grading D.7% Cu, with by-product magnetite, phosphate, and in
another orebody vermiculite; Mountain Pass. California in which the Sulphide
Queen carbonatite body contains in excess of 25,000,000 tons grading S-10%
rare-earth oxides; and Araxa. Minas Gerais, Brazil with an orebody of 300,000,000
tons grading 3. 3?B Nb205. In Canada the only producer is St. Lawrence Columbium
and Metals Corp. from the Oka complex in Quebec (see Table 1).
SEABROOK LAKE
FIRESAND RIVER
District oI Algoma
2191G. 2192G
District of Algoma
2228G. 2229C
•'S
'-O
J&
^UsTlV-
^
\
^4
Although the classification of carbonatite-alkalic complexes is controver
sial, both Heinrich (1966, p.11) and Tuttle and Gittins (1966, p.417-541) present
data indicating the occurrence of over 200 complexes in the world with about
L10-120 in Africa, over 40 in Eurasia, and 10 or more in South America. The
writer lists 43 in Ontario (TebLe 2) and their location is shown on the adjoining
map. Aeromagnetic maps of 34 of these are shown in the inset maps, all at the
scale of l inch to 2 miles, unless otherwise indicated.
52^55' LX
^i
HUDSON
BAY
A number of mafic alkalic complexes, such as Port Coldwell, Killala Lake,
Drowning River, Mammamattawa and Squirrel River are included in Table 2 because
they are related in origin and age to the carbonatite-alkalic complexes and
have similar outlines on the aeromagnetic maps. Little is known about the
geology of many of the complexes (e.g. Niskibi Lake, Gooseberry Brook, Wapikopa
River, Lawashi River, Poplar River, Nagagami River) revealed by the aeromagnetic
surveys but they are included In Table 2 at the present time. For the remainder
of Canada, Tuttle and Gittins (1966) describe 2 in Quebec and possibly 4 in
British Columbia.
f" Niskibi
Lake
•;
#
GOOSEBERRY BROOK
District of Kenora
(Patricia Portion)
rjTE -.-r
UAKBUWAMIb-ALKALIi; COMPLEXES IN ONTARIO
BIG BEAVER HOUSE
\
384 30. 36Viti
93 9G
3W
•. ?k
tl—tL
5Z0 5C'M
^T) IV
-~\M
^,j~^
•^
\
^
WfS
'^-r
x
;is:v
S^1
^
^
yy
4-^A
'l
'?-
M"
^
^!?
T^
\
POP1AR RIVER
District of Kenora
(Patricia Portion)
381 f.C
•51 U 40'
l
Martison Lake
Cochrane
j
Nagaganii River
Cochrane
Squirrel River
\
N,
\f
Cochrane
ap
Cochrane
Nb
*Coaif e v- Sumach
Kenora
Kenora (P.P.)
Mb, Cu, ap
Nh, Ce p La, verrn
Kenora (P.P.)
GooHtbtirrj' Brcjyk
Kenora (F. P. )
,
Lawashi River
Kenora (P.P. )
1
Niakibi Lake
Kenora (P.P. 3
i iU
Poplar River
Kenora (P.P. J
1
Schryburt Lake
Kenora (P.P.)
i
Wapikopa Rivor
Kenora (P.P. )
, I
PI
*B-rent
Nipissing
*Burritt Island
Nipissing
enango
tlnuqreau
Firesand Rive
' - Waua\
F^
Ne m eg li
BotdEn a~Nb',u;rh,
Lackner
*
ALBANY FORKS
District of Cnchrnnp
JB9^iG
POOHBAH LAKE
District of Katny River
c-—-—
/.S" 20'
Vt
Rainy River
-
-
Borden
Sudbury
Lackner Lake
Sudhury
Fe , U, ap, Kb, Ce
Sudbury
Nb , tt, Th , Fe , ap , Co 1010
Shenango
SlttJbury
Siidbtiry
verm
*
Chipinaii Lake
Thunder Bay
Nb
'l"'\l^\ ''J
Killala Lake
Thunder Bay
Cu, Hi
ISvJ
y '-f[ X '
Cu, Fe(Ti)
Prairie Lake
*Sturgeon Lalu;
Thunder Bay
fi, I*
vx
\
W
^,v Nfed
r
;\M
'C.
^
^\
*
^ illustrated by an inset map.
' -JH3J*
"V*-
a^x'w^
j
^i^AlCalVaiider
\'
555p.
Lumbers, S.H.
1970: Geology of the North Bay area; Ontario Dept. Mines,
Open File Kept. 5045, 187p. (see p,84-101, 148-158)
'^1
'-~?*V*
Parsons, G.E.
1961: Niobium-bearing complexes east of Lake Superior;
Ontario Dept. Mines, Geol. Rept. No.3, 73p.
1
^^
'
' j
Rowe, Robert B.
IL,
1958:
CALLANDER BAY
District cf Parry Sound
GSC 147 7G
Brent
n\
m
FaLte'
Tablel
-.\i
^
p(fl r.'7t'(l /vT v-
l
JffiS^
J5vS
Consolidated Morrison Explorations Ltd.
Ore Res:
10,000 tons/vert, ft. grading 0.827, Nb2 0s
(Northern Miner, June 18, 1970).
LACKNER
^
Ore Res:
i&U
80,000,000 tons D.25% Nb 2 0 5 .
Calcite Zone:
. ,.. .,..... Uranium
880,000 tons Q.9% Nb2 0 5 .
760,000 tons 0.237. Nb2 0 5 .
MANITOU ISLANDS Nova Beaucage Mines Ltd.
. . . . . . . Vermiculite
• R VERiTlNDIM-J? RESERVE'
Ore Res:
jsJ
S
Ore Res:
7
1,893,000 tons D.049% U 30 a and G.86% Nb2 0 5
2,962,000 tons 0.0417. U3 0 g and Q.69% Nb2 05
Idle since 1956.
St. Lawrence Columbium and Metals Corp.
OKA,QuebE
f/^
7/-'
Nos. 3-4 Zones: 37,000,000 tons
21.37* apatite, 13.77* magnetite, and 0.1987. Nb2 05 .
No. 8 Zone:
... ....... Titanium
n-^^
Multi- Minerals Ltd.
No. 6 Zone: 5,024,250 tons
69.67. magnetite, 21.97. apatite, and 0.1731 Nb205 .
ARGOR
District of Cochrane
23UG
........... Thorium
ORE RESERVES AND PRODUCTION
ARGOR
^ 500 50- ,f(
............ Nickel
District ol Thunder
2161G
Niobium (columblum) deposits of Canada; Geol. Surv.
Canada, Econ. Geol. Series No.18, 108p.
Tuttle, O.F. and Gittins, J. (Editors)
1966: Carbonatites; Interscience Publishers (John Wiley
and Sons Ltd.), 591p.
S*?*
*
Niobium (Columblum)
CHIPMAN LAKE
IAETAR'A:
i
IZL
.............. Iron
j^i
Ss
O'l
M
li
y.&t-L
. . . . . . . . . Lanthanum
t?/
LITTLE DROWNING RIVER
DitLriijt ui Cochrane
3893G
Heinrich, E. Wm.
1966: The geology of carbonatites; Rand McNally ft Co.,
XT**™
. . . . . . . . . . . . Copper
^/•tfe^ .ic
AM
^
i
.......... Fluorite
\'
v^
*i' IB^TJttVjs.
............ Cerium
Vy
iw
\
. . . . . . . . . . . Apatite
^
flfci
METAL AND MINERAL REFERENCE
^
DISTRiCT
*7,
\^
^J?
'
#
r-if^/4
-J
oo
-
S
^^Sfli
1112
Gittins, J., Maclntyre, R.M., and York, D.
1967: The ages of carbonatite complexes in eastern Canada;
Canadian J. Earth Sci., Vol.4, p.651-655.
i-X-. 11
^
LAKE NIPISSING
Jtf^
X
.-Cre*k
)
^'
fa
tfb, Fe(Ti) , ap
4-;'ifA
48",
'CALLANDER BAY
Thunder Bay
Bennett, G., and Riley, R.A.
1969: Carb Lake carbonatite; p,40-43 In Operation Lingman
Lake, Ontario Dept. Mines, Misc. Paper 27, 52p.
1090
1560
Thunder Bay
Paper 10, 9gp . (see p.21-22, 66-70, 71-72)
x
S
Geology and mineral possibilities in northern Patricia
district, Ontario; Ontario Dept. Mines, Misc. Paper
28, 54p, (see p,16, 25, 27, and 38)
Bennett, G., Brown, D,D,, George, P.T., and Leahy, E.J.
1967: Operation Kapuskasing; Ontario Dept. Mines, Misc.
MANITOU ISLANDS
District of Kipissing
G3tJ 1487G, 1488G
560
tfeneiiusenda Lake
:^^aa^^^^e.
-i ^
LAKE
Poohbah Lake
'^I'&ait
Nb
Fe , Sb , ap
Ce , f 1
-
'l/'vK'i .j)
Seabrook \
Lake
Nipissing
Nipissing
Kb
'i /Ja.Hf" 1"1""'*
^
1969;
Parry Sound
FWSiklft"
Ayres, L.D., Bennett, G., and Riley, R.A.
Nh, ap
Tou-nship 107
Cl 1 ,'
SELECTED BIBLIOGRAPHY
-
Callander flay
P^M,L,S . Ea rd Port Coldwell
—^
-
'
^N^V WI!
^LarJwL*^
o-1
-
Kb, U, ap
1|
Virsinia-
Joint aeromagnetic surveys of northern Ontario during the years 1959-1967
by the Ontario Department of Mines and the Geological Survey of Canada have
revealed numerous, previously unknown complexes; a number of these arc under a
cover of Paleozoic sedimentary rocks in the James Bay Lowland. One of these,
the Argor carbonatite body (Consolidated Morrison, 1966- ), contains an
economically significant tonnage of Nb2 05 as uranium-free pyrochlore (see Table l)
Nb, ap
HipisBing
V
In Ontario some occurrences have been known for many years but were not
recognized as carbonatite-alkalic complexes at the time of their discovery. The
recognition of these complexes in the 1950's resulted in the exploration of the
Firesand (Algoma Ore Properties, 1951-8), Manitou Islands (Beaucage, 1952-6, see
Table l),Nemegosenda (Dominion Gulf, 1954-8), Lackner (Multi-Minerals, 1954-8,
see Table 1), Clay-Howells (Steel Co. of Canada, 1954-5), Cargill (Continental
Copper, 1954-7, 1967), Chipman Lake (1954-5), Iron Island (Nipiron, 1952-4), and
more recently, Big Beaver House (Many Lakes, 1962), Port Coldwell (Anaconda,
1962- ), Carb Lake (Big Nama Creek and Larandona), Albany Forks, Drowning River,
Mammamattawa, and Squirrel River (Keevil Mining Group).
The ages of the carbonatite-alkalic complexes in eastern Canada (Gittins
et al. 1967} fall into four groups. These are 125, 565, 1075, and 1700 m.y.,
with a possible fifth at 1560 in.y. Niobium is found In carbonatites of each
age group.
Manitou Islands
w'^.rL1^
*T-^—f
(O*
*
b,Fe(Ti)
1
1QD5
|
^/Uy
^J.' i
^"""^"^^I
m
Iron Island
Many of the complexes have been found by aeromagnetic or aeroradiometric
surveys by mining companies or government agencies. The complexes are indicated
on aeromagnetic maps {see inset maps) by circular, oval, elliptical, crescentshaped or horseshoe-shaped anomalous areas. In the simplest complexes carbonatite
cores show as a central magnetic low, and surrounding concentric highs may be
caused by either magnetite-bearing carbonatite or rings of alkalic rock. More
complex rock relationships and mineralized bodies containing magnetite as an
essential mineral are revealed by various lenticular, high anomalous areas.
Because many carbonatlte-alkalic complexes are poorly exposed detailed ground
magnetometer surveys combined with the known distribution of boulder erratics
have proved especially valuable in delineating the best areas for exploration by
diamond drilling. Moreover, scintillometer surveys are also effective tools in
exploration because of the radioactivity commonly associated with pyrochlore
mineralization.
- 52
Big Beaver House
Carb Lake
^,
1695
Kb
,
*Valetitlne Tp.
1
^
;^
m
*^
S
r i ea *uwBrBne
Prairie
r: 'c
Cochrane
Cochrane
\
i)
"i-, '
S0
|
," *
WAPIKOPA
RIVER
District of Kenora
(Patricia Portion)
-l -' ^
^
*KingEisher River Kast
Cochrane
i C
Nb
*??^
Cochrane
Little Drowning River
\ y3
i
AGoldray
Valentine Tp.
Kingfisher River West
Mammamattawa
. j5
f \
KK
1
-
^*
.,
1
Fa
\^0
Fe.Nb
1655
Cochrane
\
4
Nb
Cochrane
Drowning River
*Goldray
*^
Little
A Drowning River
Drowning River 4 \ Fe j
Kingfisher R.Wes*4 Kin9fisher R-Eas1
Mammamattawa
Alagagam
Coth-raiK
107
1
-
1010
y""/1 . .
\
Fe , Nb
1740
C^
no"T^^ ^
-
Cochrane
Fe , Nb
:
Poplar River
Csrletnn
.OWNSHIP
District of Sudbury
GSC 1524G
1
54" 1
1
Cu, Fe(Tl)
^
Lawashi f
River
y
^,
1103
Cochrane
1
District of Kenora
(Patricia Portion)
93 3G
^
Hb
Cochrane
SCHRYBURT LAKE
^1
Algaroa
Clay-Howalls
3
/GUV
^
Se a brook Lake
Cflrgl 1 1
V, l a* api sk a l
LAWASHI RIVER
Di9trict of Kenora
(Patricia Portion)
2298G
ltX(8
)
uV
x-
Nb.
•p
V\
Schryburt*
vf
Algoma
Albany Forks
O*
X-
Firesand River
*EaS r.vlew
•C
~*
1
Ds;or Mi-rai 2ation Am ave 1
Name
\~\
/f^
'H' a
Gooseberry
Brook
District of Kenora
(Partricia Portion)
3g
NOTES
3,125,000 tons aver. 0.48770 Nb2 05 (Oct. l, 1969)
Production
12 mos. to Sept. 30:
1964
1965
1966
1967
1968
1969
1969/1970*
J 2 ,,
KINGFISHER RIVER WEST
strict of f.nchrmle
3892C. 3B93G
P
45DOD'
M
T^-S.
Ae)
X
O-i
A
^
:t^
S
Tons milled
Niobium pentoxide, Ibs.
Production revenue, S
Average per ton, $
^4
321,585
383,553
406,698
369,642
360,194
475,201
350,762
2,091,725
2,164,443
2,203,985
2,328,638
6.52
2,647,667
3,188,114
2,368,225
2,799,982
2,005,989
1,966,937
3,059,052
3,107,514
2,461,000
2,650,794
7.85
7.57
5.46
6.53
7.56
6.53
ttZ
PRAIRIE LAKE
District oC Thunder Bay
2H8G
MAMMAMATTAWA
District of Cochrane
39 UC
PALABDRA. Transvaal
Ore Res:
n;
•/j
315,000,000 tons aver. 0.697, Cu (1963)
80,000,000 tons vermiculite (to 70 feet, 307, ree.)
Production
Y/rYs:^.
•^^^i-
m^•j^-
r*-
'^S)
*~
^
*6 months
Palabora Mining Co. Ltd.
Copper (99.497, Cu)*
Magnetite cone. (66.l7,Fe, 0.88?. TI02 )*
Sulphuric Acid (95.37. H 2 S04 )*
Vermiculite (91. IE Verm.)*
1966
1967
1968
1969
short tons
68,276
347,405
53,254
113,732
short tons
84,370
961,556
109,873
110,840
short tons
79,433
800,505
106,849
121,298
short tons
85,198
1,137,908
111,096
141,963
*1969 values
i'
s/
•^
\
.'49010'
50 D 20'
ARAXA
Gerais, Brazil
Companhia BrasMeJra de Metalurgia e Mineracgo (CBMM)
Production
1966
Niobium pentoxide , Ibs. ( in pyrochlore
concentrates (averaging 591
6,210,909
1967
6,017,103
1968
6,502,269
-:-Smf
SOURCES OF INFORMATION
DROWNING RIVER
District of Cochrane
3893G. 3894G, 39I6G. 39i-G
ODMNA 4640
KILLALA LAKE
District di" Tliuiwer Bay
2U8G, 2158G
PORT COLDWELL
6 Mil
District of Thunder Bay
2146G, 2147G, 2156G, 2157C
MARTISON LAKE
District of Cochrane
J9&CC
NAGAGAMI RIVER
District of Cochrane
3913G
SQUIRREL RIVER
ntscrlcc of Cochrane
Compilation by J. Satterly, 1968; revised with additions 1970.
Aeromagnetic maps of Ontario Department of Mines - Geological
Survey of Canada, and Geological Survey of Canada.
Ontario Department of Mines files.
Palabora Mining Company, Limited, annual reports.
St. Lawrence Columbium and Metals Corporation, annual reports.
United States Bur. Mines, Mineral Trade Notes, Vol.66, No.l,
Jan. 1969, p.ft; Vol.66, No.12, Dec. 1969, p.10. (Brazil)
Base map directly from Ontario Department of Mines map 2190.
First edition, 1968.
Second edition, revised and issued 1970.
1969
6,667,000