scholarly journals The origin of nelsonite constrained by melting experiment and melt inclusions in apatite: The Damiao anorthosite complex, North China Craton

2017 ◽  
Vol 42 ◽  
pp. 163-176 ◽  
Author(s):  
Meng Wang ◽  
Ilya Veksler ◽  
Zhaochong Zhang ◽  
Tong Hou ◽  
Jakob K. Keiding
Keyword(s):  
North China Craton ◽  
North China ◽  
Melt Inclusions ◽  
Melting Experiment ◽  
Anorthosite Complex

Ore-Controlling Structures of the Heishan Iron Deposit, Damiao Anorthosite Complex in North China Craton and Ore-Prospecting

2014 ◽  
Vol 88 (s2) ◽  
pp. 1595-1596 ◽  
Author(s):  
Zhengle CHEN ◽  
Weihe DU ◽  
Bailin CHEN ◽  
Fengbin HAN ◽  
Yong WANG ◽  
...  
Keyword(s):  
North China Craton ◽  
North China ◽  
Iron Deposit ◽  
Ore Prospecting ◽  
Anorthosite Complex

scholarly journals Tectono-magmatic controls on decratonic gold deposits

2021 ◽  
Vol 176 (9) ◽  
Author(s):  
Jia Chang ◽  
Andreas Audétat ◽  
Jian-Wei Li
Keyword(s):  
Numerical Modeling ◽  
Early Cretaceous ◽  
North China Craton ◽  
North China ◽  
Melt Inclusions ◽  
Mineral Exploration ◽  
Gold Deposits ◽  
Porphyry Cu ◽  
The North ◽  
Icp Ms

AbstractMagmatic-hydrothermal gold–copper deposits in post-subduction settings represent essential targets for mineral exploration, but controls on their formation remain controversial. The early Cretaceous lode Au districts that formed during lithosphere destruction of the North China Craton provide an ideal opportunity to better understand the key tectono-magmatic factors responsible for the genesis of Au-rich deposits in post-subduction settings. Here, we present a LA-ICP-MS study of silicate melt inclusions and sulfide inclusions from ore-related mafic to intermediate rocks in the central Taihangshan Au district in the interior of the North China Craton to constrain the content and evolution of magmatic ore metals ± volatiles. The results, combined with numerical modeling, suggest that the ore-related magmas contained only a few ng/g Au, which is similar to the Au content of non-mineralization-related mafic to intermediate magmas worldwide. The low Au content of the lode Au-related magmas suggest that large volumes of magmas had to accumulate in the middle to lower crust through trans-lithospheric fault systems to produce the lode Au deposits. It is further suggested that the lode Au-related magmas were alkali-rich, hydrous, oxidized and relatively rich in sulfur and chlorine (mafic melt inclusions contain 0.14‒0.24 wt% S and 0.1‒0.2 wt% Cl). These properties are considered critical for the generation of auriferous ore fluids. By comparing the tectono-magmatic setting of the giant Jiaodong Au province (~ 4000 t Au) with the central Taihangshan district (~ 150 t Au), we propose that the much larger total Au tonnage of the Jiaodong district results from the accumulation of a much larger volume of ore-forming magmas at deep crustal levels, induced by a stronger degree of lithosphere modification. In addition, given that the composition of lode Au-related magmas is similar to that of porphyry Cu–Au-related magmas, the lack of giant, early Cretaceous porphyry Cu–Au deposits in the North China Craton suggests that strong extensional settings favor the formation of lode Au deposits instead of porphyry Cu–Au deposits. The present study, therefore, has general implications for the genesis of Au-rich deposits in strongly extensional settings.

Silicate melt inclusions in clinopyroxene phenocrysts from mafic dikes in the eastern North China Craton: Constraints on melt evolution

2015 ◽  
Vol 97 ◽  
pp. 150-168 ◽  
Author(s):  
Ya-Chun Cai ◽  
Hong-Rui Fan ◽  
M. Santosh ◽  
Fang-Fang Hu ◽  
Kui-Feng Yang ◽  
...  
Keyword(s):  
North China Craton ◽  
North China ◽  
Melt Inclusions ◽  
Silicate Melt ◽  
Melt Evolution

Alteration of the Damiao anorthosite complex in the northern North China Craton: Implications for high-grade iron mineralization

2014 ◽  
Vol 57 ◽  
pp. 574-588 ◽  
Author(s):  
Houmin Li ◽  
Lixing Li ◽  
Zhaochong Zhang ◽  
M. Santosh ◽  
Mingjun Liu ◽  
...  
Keyword(s):  
North China Craton ◽  
North China ◽  
High Grade ◽  
Anorthosite Complex
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