Lijiaying

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Location - China

Age (of protore) - 1400 Ma

Original size - 2.3 million tonnes of Mn

References

Yeh, H-W., Hein, J.R., Ye, J., and Fan, D-L., 1999, Stable isotope, chemical, and mineralogical compositions of the Middle Proterozoic Lijiaying Mn deposit, Shaanxi Province, China: Ore Geology Reviews, v. 15, p. 55-69.

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

Major Elements, oxide percent

 

Sample location

 
Sample no.

%

%

%

%

%

%

%

%

%

%

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

Average

 
Mn carb
36.8
9.47
4.62
0.14
18.8
3.41
0.05
0.10
0.03
0.01
21.6
J 992-15-1J1
46.5
0.8
12.9
1.0
18.4
0.8
<0.02
0.2
0.0
0.1
11.8
I 992-15-1I2
43.0
0.8
14.4
0.6
19.7
1.7
0.3
<0.15
<0.02
0.1
12.7
M 992-15-1M2
35.4
1.1
27.3
2.0
12.3
5.7
1.5
0.5
0.1
0.1
9.4
K 992-15-1K2
35.1
1.0
14.0
0.6
24.8
1.2
0.2
<0.15
<0.02
<0.05
17.4
H 992-15-1H
33.6
1.2
23.7
1.0
16.7
1.1
0.7
2.4
0.1
0.1
11.3
L 992-15-1L2
30.5
0.9
17.3
0.5
24.4
2.8
0.5
<0.15
<0.02
<0.05
18.2
K 992-15-1K1
13.7
0.4
22.5
0.6
32.6
1.9
0.1
1.3
0.1
0.1
23.7
M 992-15-1M3
13.1
0.2
3.4
0.2
41.4
0.4
<0.02
<0.15
<0.02
<0.05
36.9
D 992-15-1D2
8.6
4.7
33.3
4.7
20.2
3.9
0.1
4.0
0.6
0.2
17.4
F 992-15-1F2
8.2
1.1
23.5
1.5
32.1
1.0
0.1
1.1
0.1
0.1
26.7
G 992-15-1G
5.5
13.6
27.6
3.6
13.6
3.5
1.4
5.5
1.0
0.4
13.3
L 992-15-1L1
3.3
7.0
10.5
0.6
39.0
1.1
0.2
1.6
0.1
0.1
30.8
D 992-15-1D1
1.3
13.2
49.7
11.5
6.1
2.6
0.1
7.3
2.6
0.8
4.57
C 992-15-1C
0.8
61.4
15.3
1.4
11.4
1.1
0.1
<0.15
0.1
0.1
9.59
A 992-15-1A
0.5
7.6
46.4
14.7
6.0
3.7
1.7
4.6
3.5
0.4
6.76
B 992-15-1B
0.5
6.9
46.5
14.7
7.2
3.6
2.1
4.4
3.6
0.4
6.44
N 992-15-1N
0.2
16.1
45.2
10.3
14.1
2.0
2.5
2.1
1.2
0.2
12.1

 

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
                                       

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
avg
14.0
5.8
0.7
3.3
0.4
0.2
0.7
0.1
0.7
0.1
0.5
0.1
0.6
  
992-15-1J1 14 78 2.7 9.7 1.5
0.06
1.6
0.28
2.2
0.32
1.4
0.21
0.95
  
992-15-1I2 11 61 2.2 7.8 1.5
<0.03
1.6
0.24
1.6
0.32
0.9
0.13
0.72
  
992-15-1M2 11 45 1.8 7.6 1.5
0.28
1.1
0.21
1.4
0.39
0.8
0.16
0.93
  
992-15-1K2 12 51 2.3 7.7 1.6
0.18
1.4
0.25
1.5
0.32
0.94
0.14
0.67
  
992-15-1H 10 41 1.8 7.4 0.93
<0.03
2.4
0.26
1.5
0.34
0.83
0.13
0.92
  
992-15-1L2 14 66 2.8 8.9 1.6
0.32
1.4
0.23
1.7
0.31
0.89
0.13
0.82
  
992-15-1K1 3.5 8.2 1 3.4 0.84
0.1
1
0.2
0.99
0.21
0.6
0.08
0.48
  
992-15-1M3 2.5 4.6 0.5 1.8 0.2
<0.03
0.4
<0.07
0.1
0.03
0.07
<0.03
<0.05
  
992-15-1D2 18 44 3.6 14 2.4
0.23
2.5
0.39
2.5
0.5
1.5
0.23
1.5
  
992-15-1F2 6.2 16 1.2 4.8 0.52
<0.03
1.1
0.2
0.97
0.25
0.66
0.12
0.79
  
992-15-1G 29 68 21
<4
<8
<2
  
992-15-1L1
 
992-15-1D1 42 90 29
<4
<8
<2
  
992-15-1C 8 17
<8
<4
<8
<2
  
992-15-1A 18 52 29
<4
<8
<2
992-15-1B
992-15-1N

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
avg
32.70
59.56
16.55
11.51
6.23
2.41
5.17
4.22
3.37
2.543
0.451
9.88
2.1563
0.4342
9.2152
992-15-1J1 38.15 81.50 19.71 13.64 6.49 0.69 5.23 4.83 3.83 2.973 0.118 9.958
992-15-1I2 29.97 63.74 16.06 10.97 6.49 5.23 4.14 2.90 2.905 10.324
992-15-1M2 29.97 47.02 13.14 10.69 6.49 3.22 3.59 3.62 3.75 2.370 0.666 7.993
992-15-1K2 32.70 53.29 16.79 10.83 6.93 2.07 4.58 4.31 2.70 2.275 0.368 12.103
992-15-1H 27.25 42.84 13.14 10.41 4.03 7.84 4.48 3.71 2.264 7.345
992-15-1L2 38.15 68.97 20.44 12.52 6.93 3.68 4.58 3.97 3.31 2.470 0.653 11.537
992-15-1K1 9.54 8.57 7.30 4.78 3.64 1.15 3.27 3.45 1.94 1.027 0.333 4.927
992-15-1M3 6.81 4.81 3.65 2.53 0.87 1.31 0.964
992-15-1D2 49.05 45.98 26.28 19.69 10.39 2.64 8.17 6.72 6.05 1.281 0.287 8.109
992-15-1F2 16.89 16.72 8.76 6.75 2.25 3.59 3.45 3.19 1.374 5.303
992-15-1G 79.02 71.06 29.54
992-15-1L1
992-15-1D1 114.44 94.04 40.79
992-15-1C 21.80 17.76
992-15-1A 49.05 54.34 40.79
992-15-1B
992-15-1N                        

Isotopes
Sample
 %S ore δ34S ore, sulfide %S host δ34S host, sulfide δ13C pdb δ18O pdb δ18O smow Stotal % Ccarb % mineralogy
992-15-1K2        
-1.8
-12.8
17.7
     calcite
992-15-1K1C         -0.4 -12.4 18.1     calcite
992-15-1K1K         -0.5 -3.7 27.0     kutnahorite
992-15-1M3         -3.3 -12.9 17.6     calcite
992-15-1D2         -3.5 -9.3 21.3
calcite
992-15-1F2         -1.0 -9.7 20.9
calcite
992-15-1L1         -1.5 -12.5 18.0
calcite
992-15-1D1         -4.0 -9.5 21.1
calcite
992-15-1C         -3.9 -10 20.6
calcite