New potential pyrrhotite and pentlandite reference materials for sulfur and iron isotope microanalysis

2021 ◽  
Author(s):  
Lei Chen ◽  
Yu Liu ◽  
Yang Li ◽  
Qiuli Li ◽  
Xian-Hua Li
Keyword(s):  
Reference Materials ◽  
Sulfide Minerals ◽  
Ore Deposits ◽  
Iron Isotope ◽  
S Isotopes ◽  
Fe Isotopes

Pyrrhotite and pentlandite are the most common Fe sulfide minerals in magmatic ore deposits and meteorites. Multiple S isotopes pairing with Fe isotopes of bulk Fe sulfides have proven to...

scholarly journals Iron Isotopes Constrain the Metal Sources of Skarn Deposits: A Case Study from the Han-Xing Fe Deposit, China

Minerals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 951
Author(s):  
Bin Zhu ◽  
Hongfu Zhang ◽  
M. Santosh ◽  
Benxun Su ◽  
Pengfei Zhang ◽  
...  
Keyword(s):  
Major Elements ◽  
Ore Deposits ◽  
Magmatic Fluid ◽  
Skarn Deposit ◽  
Mass Balance Calculation ◽  
Positive Correlation ◽  
Fe Isotopes ◽  
Magmatic Fluids ◽  
Skarn Deposits

Magmatic fluids and leaching of rocks are regarded as the two sources of magmatic hydrothermal deposits, but their relative contributions to the metals in the deposits are still unclear. In this study, we combine major elements and Fe isotopes in two sets of rocks from the Han-Xing iron skarn deposit in China to constrain the iron sources. The positive correlation between the δ56Fe and ∑Fe2O3/TiO2 of altered diorites (∑Fe2O3 refers to the total iron) demonstrates that heavy Fe isotopes are preferentially leached from diorites during hydrothermal alteration. However, except for the pyrite, all the rocks and minerals formed in the skarn deposit are enriched in the light Fe isotope relative to the fresh/less altered diorites. Therefore, besides the leaching of rocks, the Fe isotopically light magmatic fluid also provides a large quantity of iron for this deposit. Based on the mass balance calculation, we conclude that iron from magmatic fluid is almost 2.6 times as large as that from the leaching of rocks. This is the first study to estimate the relative proportions of iron sources for Fe deposits by using Fe isotopes. Here, we propose that the high δ56Fe of magmatic intrusions combining the positive correlation between their ∑Fe2O3/TiO2 and δ56Fe could be taken as a fingerprint of exsolution or interaction with magmatic fluids, which contributes to the exploration of magmatic hydrothermal ore deposits.

The X-Ray Analysis of Uranium Ores for Iron Sulfide Minerals

1981 ◽  
Vol 25 ◽  
pp. 113-115
Author(s):  
A. J. Durbetaki ◽  
R. H. Carlson ◽  
T. F. Quail
Keyword(s):  
Hydrogen Peroxide ◽  
Iron Sulfide ◽  
Sulfide Minerals ◽  
Ore Deposits ◽  
X Ray Diffraction ◽  
X Ray ◽  
Iron Sulfide Minerals ◽  
Xrd Method

Hydrogen peroxide is used to extract uranium by the in situ leaching of sandstone ore deposits containing uraninite (UO2). Since FeS2 minerals, marcasite and pyrite, also occur in these deposits and they consume hydrogen peroxide in their oxidation, it is important to determine their concentration.A quantitative X-ray diffraction (XRD) method was therefore developed in order to monitor the concentration of marcasite and pyrite in sandstone ores.

Lead Isotope of Sulfide Minerals from Dachang Ore Field of Guangxi (South China): Characteristic and Implication

2012 ◽  
Vol 455-456 ◽  
pp. 1399-1403
Author(s):  
Yong Sheng Cheng
Keyword(s):  
South China ◽  
Linear Relation ◽  
Lead Isotope ◽  
Sulfide Minerals ◽  
Ore Deposits ◽  
Guangxi Province ◽  
Ore Deposit ◽  
Ore Body ◽  
Polymetallic Ore

In the Danchi mineralization belt of Guangxi province, south China, the Dachang tin-polymetallic ore deposit is one of the largest Sn ore deposits in this world. But about the genesis and the ore source, there have been some disputes. In terms of the Dafulou deposit, the mineralization model and deposit mechanism is rather illegibility. By analysing and comparing the lead isotope of three ore deposit (the Changpo, the Lamo and the Dafulou), it show that the correlations of 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb of sulfide minerals demonstrate obvious excellent linear relation. So, it is also suggested that the eastern mineralization belt, the middle mineralization belt and the western mineralization belt shared the same ore source. And, according to the features of no.22 ore body, the Dafulou deposit is characterized with the characteristics of the Sedimentary Exhalative Deposit (SEDEX).

Discriminate between magmatic- and magmatic-hydrothermal ore deposits using Fe isotopes

2021 ◽  
Vol 130 ◽  
pp. 103946
Author(s):  
Yue Wang ◽  
Xiangkun Zhu ◽  
Chao Tang ◽  
Jingwen Mao ◽  
Zhaoshan Chang
Keyword(s):  
Ore Deposits ◽  
Fe Isotopes ◽  
Hydrothermal Ore Deposits

scholarly journals Supplemental Material: Archean lithospheric differentiation: Insights from Fe and Zn isotopes

2020 ◽  
Author(s):  
Luc Doucet ◽  
et al.
Keyword(s):  
Reference Materials ◽  
Analytical Method ◽  
Iron Isotope ◽  
Zn Isotopes

Analytical method for iron purification, and iron isotope values for reference materials.<br>

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