Nova Scotia - karst hosted ores in Windsor Group carbonates

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Location - North America, Canada

Age (of protore) - 350 Ma

Original size - < 1 million tonnes of Mn

References

Bishop, D. G., and Wright, J. D., 1974, Geology and trace elements studies of manganese occurrences in Nova Scotia: Nova Scotia Department of Mines, Economic Geology Series 74-1, 255 pp.

major elements - trace elements - rare-earth elements - REE normalized - isotopes

Major Elements, oxide percent

 

 

 

%

%

%

%

%

%

%

%

%

%

%
MnO
Fe2O3t
SiO2
Al203
CaO
MgO
K2O
Na2O
TiO2
P205
LOI

Average

 
Mn oxide
59.9
3.9
6.8
11.1
3.9
4.6
0.5
na
na
0.8
na
 
manganite ores
59.8
7.1
4.3
8.5
0.8
2.2
0.6
1.2
1 Bridgeville Mine
53.6
3.78
0.67
0.09
17.2
1.04
0.09
0.92
0.05
0.001
19.7
2      Lake Mine
50.3
5.57
4.90
0.11
14.7
2.43
0.00
0.02
0.01
0.03
15.3
3 Parker Mine
48.0
5.12
3.30
0.02
18.0
1.50
0.01
0.05
0.01
0.001
16.8
4 Shaw&Churchill Mine
45.9
4.91
4.61
0.20
17.9
2.14
0.14
0.10
0.08
nr
20.4
 
pyrolusite ores
60.0
2.7
7.9
12.2
5.2
5.6
0.3
5 Black Rock
45.2
6.49
4.70
0.11
15.8
2.90
0.02
0.03
0.01
0.003
18.1
6 Brookdale Mine
44.8
6.17
4.87
0.02
15.3
3.50
0.03
0.03
0.01
0.006
18.9
7 E. Mountain Mine
43.9
9.77
6.19
0.20
14.6
3.20
0.10
0.10
0.06
nr
20.7
8      Macdonald  
43.4
7.05
6.25
0.25
14.1
3.91
0.00
0.03
0.01
0.03
19.6
9 McCuish Mine
42.5
5.10
3.55
0.16
19.3
5.04
0.01
0.04
0.05
0.008
20.1
10      Minasville  
42.3
4.93
3.46
0.14
20.5
3.54
0.00
0.02
0.01
0.03
20.8
11 Mn mines
41.8
5.32
4.24
0.02
19.0
2.40
0.01
0.03
0.01
0.003
20.6
12 Morrison Mine
41.1
9.98
5.16
0.02
17.7
2.30
0.03
0.03
0.01
0.006
16.7
13 Tennycape Mine
40.9
5.20
2.92
0.13
20.4
4.96
0.01
0.06
0.05
0.001
21.3

 

Trace elements, ppm

 

 

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

 
As
Ba
Cd
Co
Cr
Cu
Mo
Nb
Ni
Pb
Rb
Sc
Sr
Th
U
V
Y
Zn
Zr
avg
110
9007
na
250
50
615
257
na
490
390
na
na
570
na
na
583
na
432
na
manganite ores
9056
602
142
430
204
421
145
366
1
12818
673
429
387
800
354
2     
8350
526
133
463
325
263
140
462
3
6000
570
150
25
300
4  
 
250
50
640
400
80
200
150
350
pyrolusite ores
110
8990
620
333
515
472
682
759
461
5
80
13000
513
100
225
233
50
650
625
6
800
285
300
400
1000
700
7
333
8400
2475
100
100
300
900
263
8     
5000
180
800
900
500
700
70
9
5.5
13379
387
930
517
903
543
436
10     
3000
285
1000
400
775
1000
50
11
3800
710
150
300
247
12
20
2400
550
1025
1463
13
31133
200
575
295

blank or nr = not reported; bd = below detection

Rare-earth elements, ppm

 
Sample
La
Ce
Pr
Nd
Sm
Eu
Gd
Tb
Dy 
Ho 
Er 
Tm 
Yb
Lu

Rare-earth elements,

normalized to chondritic values of Taylor & McLennan (1992)
Sample
LaN
CeN
PrN
NdN
SmN
EuN
GdN
TbN
YbN
Ce/Ce*
Eu/Eu*
LaN/YbN

Isotopes
Sample
 TC % TOC % Ccarb % δ13C pdb δ18O pdb δ18O smow Stotal % δ34S sulfide 87Sr/86Sr