1503_651674.pdf — page 11

Chen et al.: Metallogenic setting and material source of Caihong copper-lead-zinc polymetallic deposit 
- 661 - 
APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 15(3): 651-674. 
http://www.aloki.hu ● ISSN 1589 1623 (Print) ● ISSN 1785 0037 (Online) 
DOI: http://dx.doi.org/10.15666/aeer/1503_651674 
 2017, ALÖKI Kft., Budapest, Hungary 
Analysis results of REE in sulfide are listed in Table 2. The data shows that the 
LREE in veined ore sulfide is relative rich with Eu negative anomaly, where ∑REE is 
23.47~37.61, and δEu is 0.43~0.73. For lamellar sulfide, LREE is relative rich with 
weak Eu positive anomaly. ∑REE is 3.56~5.43, which is obviously lower than that of 
the sulfide of veined ore, and δEu is 0.55~2.50. The differences among the rare earth 
element components of two types of ore sulfides imply that they probably have different 
sources. 
 
Table 2. Rare earth element compositions of ore sulfide in Caihong deposite 
Sample number 
CH2-5 CH2-6 
CH2-3 
CH2-2 
A3-F1 
A3-S1 
A1-3 
A4-1 
Sample description 
lamellar 
galena 
lamellar 
sphalerite 
lamellar 
chalcopyrite 
lamellar 
pyrite 
veined 
galena 
vein 
sphalerite 
vein 
chalcopyrite 
vein 
pyrite 
Trace element (ppm) 
 
 
 
 
 
 
 
 
La 
1.14 
0.66 
1.42 
0.73 
3.04 
5.35 
6.60 
7.32 
Ce 
1.95 
1.37 
2.80 
1.38 
7.20 
10.20 
16.30 
16.70 
Pr 
0.24 
0.17 
0.24 
0.20 
1.10 
1.41 
1.85 
2.14 
Nd 
0.92 
0.68 
0.48 
0.84 
4.40 
4.69 
6.35 
6.02 
Sm 
0.20 
0.15 
0.14 
0.31 
1.29 
1.10 
1.08 
1.38 
Eu 
0.08 
0.11 
0.02 
0.10 
0.31 
0.25 
0.14 
0.29 
Gd 
0.19 
0.12 
0.07 
0.15 
1.51 
0.94 
0.84 
1.13 
Tb 
0.03 
0.02 
0.01 
0.03 
0.28 
0.16 
0.12 
0.18 
Dy 
0.24 
0.11 
0.09 
0.08 
1.63 
0.80 
0.63 
0.93 
Ho 
0.04 
0.02 
0.02 
0.03 
0.37 
0.17 
0.13 
0.20 
Er 
0.12 
0.06 
0.06 
0.05 
1.07 
0.42 
0.38 
0.58 
Tm 
0.02 
0.01 
0.01 
0.02 
0.16 
0.06 
0.05 
0.09 
Yb 
0.10 
0.07 
0.06 
0.05 
0.97 
0.30 
0.34 
0.56 
Lu 
0.01 
0.01 
0.01 
0.01 
0.14 
0.04 
0.06 
0.09 
ΣREE 
5.27 
3.56 
5.43 
3.98 
23.47 
25.89 
34.87 
37.61 
LREE/HREE 
6.02 
7.54 
15.45 
8.47 
2.82 
7.95 
12.67 
9.00 
LaN/YbN 
8.15 
6.62 
16.98 
10.47 
2.25 
12.79 
13.92 
9.38 
δEu 
1.31 
2.50 
0.55 
1.25 
0.68 
0.73 
0.43 
0.69 
 
 
Zircon U-Pb age 
The zircons in host rock are long columnar, plate-shaped, transparent and pale brown, 
and inherited zircons can be seen in partial cores. Cathodoluminescence image shows 
that a majority of zircons have characteristic magmatic origin shock bands (Fig. 7).The 
obtained 25 groups of data results are listed in Table 3. The ratios of zircon Th/U are 
between 0.41 and 1.16. HREE of zircons presents rich in chondrite-normalized diagram 
with obvious positive Ce anomaly and Eu negative anomaly (Fig. 8a). All above show 
the characteristics of magmatic zircons (Whitehouse, 2003; Cavosie et al., 2006). Four 
old 206Pb/238U age values are near the crystallization ages of Late Archean and Early-
Middle Mesoproterozoic Erathem of South Tianshan (Hu et al., 2006), which indicate 
that there are old crust basement components in magma. Two points with 206Pb /238U 
concordia ages are not in the concordia, and it is likely caused by losing of Pb. The 
concordance degree of remaining 19 points is better, 206Pb/238U age range is between 
404±7Ma and 452±8Ma, weighted average age is 426.6±4.2Ma (MSWD=3.9) (Fig. 8b). 
With the characteristics of the zircons, it is believed that the obtained age shall represent 
the eruption age of volcanic original rock of ore-bearing wall rock.