1503_651674.pdf — page 15

Chen et al.: Metallogenic setting and material source of Caihong copper-lead-zinc polymetallic deposit 
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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 
et al., 1990). According to the genetic characteristics of early stage ore, it can be take 
the mean value of volcanic massive sulfide metallogenic temperature of 300℃for the 
quartz approximate metallogenic temperature in lamellar ore (Ohmoto, 1996). The DV-
SMOW of lamellar ore quartz is between -65‰ and-80‰, and 18Owater value range is 
3.21‰-5.71‰ by formula. The δDSMOW‰ and δ18OH2O‰ value of veined ore quartz are 
quoted from Su et al. (2011). 
 
Table 5. Oxygen-hydrogen isotopic composition of ore quartz in Caihong deposite 
Sample number 
Sample description Position 
δDSMOW ‰ 
δ18OSMOW‰ 
δ18OH2O‰ 
CHT104-3 
veined ore quartz 
ZK201 
－94* 
14.1 
5.17* 
CH2-6 
veined ore quartz 
ZK201 
－82* 
14.3 
5.37* 
CHA5 
veined ore quartz 
ZK201 
－98* 
14.2 
5.27* 
CHA6 
veined ore quartz 
ZK001 
－119* 
14.7 
5.77* 
CHA7 
veined ore quartz 
ZK001 
－95* 
14.1 
5.12* 
CH3-1 
Lamellar ore quartz ZK002 
－76 
14.0 
3.91 
CH3-2 
Lamellar ore quartz ZK002 
－80 
15.8 
5.71 
CH3-3 
Lamellar ore quartz ZK002 
－65 
13.8 
3.71 
CH3-4 
banded ore quartz 
ZK003 
－66 
13.3 
3.21 
CH3-5 
banded ore quartz 
ZK003 
－72 
13.6 
3.51 
* veined ore quartz hydrogen-oxygen isotopic data is from Su et al. (2011). 
Discussion 
Metallogenetic tectonic setting 
With the lithologic characteristic of host rock and the results of lithochemistry 
protolith restoration of wall rock, it is inferred that felsic greywacke and andesitic-
dacite-rhyolite pyroclastic rock are main components of original rocks of ore-bearing 
wall rock. Greywacke components are closely relevant with plate tectonic setting. The 
contents of sandstones TiO2, TFe2O3+MgO and Al2O3/ SiO2 decrease from oceanic 
island arc, continental island arc and active continental margin to passive continental 
margin (Bhatia, 1991). In Figure 10a and b, the samples of metasedimentary rock fall 
the host regions of continental island arc and active continental margin. Crook (1974) 
also pointed that the greywacke with medium content of quartz (SiO2 content was 
between 68 wt.% and wt.74%) was generally formed in active continental margin 
island-arc or back-arc basin environment. In Yb-La/Yb and Zr-Hf diagrams (Figs. 10c 
and d), all pyroclastic rock samples fall to arc volcanic rocks or volcanic basin region 
and they are rich in K, Rb, Ba and Th, and lack of HFSE of P, Ti, Nb and Ta (Fig.10e), 
as well as rich LREE with moderate or weak negative Eu anomaly (Fig. 10f), which 
indicate continental margin arc volcanic rock characteristics (Zhang et al., 2015).  
In addition, lamellar marbles are distributed in host rock, and its original rocks 
obviously reflect the sedimentary characteristics of marginal sea basin. However, the 
marginal sea basins in island-arc environment include inter-arc basin and back-arc basin, 
but the sediments in inter-arc basins are generally pyroclastic rock without the injection 
of continental margin materials (Peng et al., 1999). It significantly does not be in 
consistence with the sandstone component of original rock. Furthermore, the ophiolite 
belt that represents remnant new oceanic crust are not found in northern margin of