Organic Gases in Fluid Inclusions of Ore Minerals and Their Constraints on Ore Genesis: A Case Study of the Changkeng Au-Ag Deposit, Guangdong, China

2010 ◽  
Vol 77 (1) ◽  
pp. 86-94 ◽  
Author(s):  
SUN Xiaoming ◽  
David I. NORMAN ◽  
SUN Kai ◽  
CHEN Binghui ◽  
CHEN Jingde
Keyword(s):  
Fluid Inclusions ◽  
Ore Genesis ◽  
Ore Minerals ◽  
Organic Gases ◽  
Genesis A

Light Hydrocarbons in Fluid Inclusions and Their Constraints on Ore Genesis: A Case Study of the Songxi Ag (Sb) Deposit, Eastern Guangdong, China

2010 ◽  
Vol 77 (2) ◽  
pp. 227-236
Author(s):  
SUN Xiaoming ◽  
David I. NORMAN ◽  
SUN Kai ◽  
WANG Min ◽  
CHEN Binghui ◽  
...  
Keyword(s):  
Fluid Inclusions ◽  
Light Hydrocarbons ◽  
Ore Genesis ◽  
Genesis A

scholarly journals Mineralogy, Fluid Inclusions, and Isotopic Study of the Kargah Cu-Pb Polymetallic Vein-Type Deposit, Kohistan Island Arc, Northern Pakistan: Implication for Ore Genesis

Minerals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1266
Author(s):  
Zahid Hussain ◽  
Chunhui Tao ◽  
Chun-Feng Li ◽  
Shili Liao ◽  
Masroor Alam ◽  
...  
Keyword(s):  
Fluid Inclusions ◽  
Trace Element Composition ◽  
Island Arc ◽  
Northern Pakistan ◽  
Isotopic Study ◽  
Ore Genesis ◽  
Polymetallic Deposit ◽  
Ore Minerals ◽  
Lead Source ◽  
Hydrothermal Environment

The Kargah Cu-Pb polymetallic deposit is a newly discovered ore deposit from the Gilgit-Baltistan region, located in the Kohistan Island Arc, northern Pakistan. However, this area is poorly researched on the ore genesis, and its origin and the evolution of its magmatic-hydrothermal system remain unclear. Three stages of mineralization were identified, including quartz-pyrite, quartz-sulfide, and carbonate representing early, middle, and late stages, respectively. The major ore minerals are pyrite, chalcopyrite, galena, and zincian tetrahedrite with minor native silver, and native gold mainly distributed in pyrite. Here, we present a systematic study on ore geology, hydrothermal alterations, trace element composition of pyrite, fluid inclusions, and isotopes (S and Pb) characteristics to gain insights into the nature of the ore-forming fluids, types of unknown deposits, and hydrothermal fluid evolution. The high Co/Ni ratio (1.3–16.4) and Co content (average 1201 ppm), the low Mo/Ni ratio (0.43–0.94) and Mo contents (average 108 ppm) of both Py-I and Py-II suggest a mafic source for the mineralization. The Au-Ni plots, Co-As-Ni correlation, and the δ34S values range from −2.8 to 6.4‰ (average of 3.4‰) indicating the affiliation of the mineralization with a mantle-derived magmatic-hydrothermal provenance. The Pb isotope data showing the narrow variations in 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb values suggest a single lead source from crustal-derived materials. The microthermometry data suggest that the dominant mechanisms are fluid boiling and mixing for mineral precipitation at temperatures ranging between 155 and 555 °C, and represent an intrusion-related magmatic-hydrothermal environment for the Kargah Cu-Pb polymetallic deposit.

scholarly journals Characterization and mapping of hematite ore mineral classes using hyperspectral remote sensing technique: a case study from Bailadila iron ore mining region

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Ibrahim Shaik ◽  
S. K. Begum ◽  
P. V. Nagamani ◽  
Narayan Kayet
Keyword(s):  
Infrared Absorption ◽  
Near Infrared ◽  
Spectral Feature ◽  
Absorption Feature ◽  
X Ray ◽  
Remote Sensing Technique ◽  
Ore Minerals ◽  
Feature Fitting ◽  
Hematite Ore

AbstractThe study demonstrates a methodology for mapping various hematite ore classes based on their reflectance and absorption spectra, using Hyperion satellite imagery. Substantial validation is carried out, using the spectral feature fitting technique, with the field spectra measured over the Bailadila hill range in Chhattisgarh State in India. The results of the study showed a good correlation between the concentration of iron oxide with the depth of the near-infrared absorption feature (R2 = 0.843) and the width of the near-infrared absorption feature (R2 = 0.812) through different empirical models, with a root-mean-square error (RMSE) between < 0.317 and < 0.409. The overall accuracy of the study is 88.2% with a Kappa coefficient value of 0.81. Geochemical analysis and X-ray fluorescence (XRF) of field ore samples are performed to ensure different classes of hematite ore minerals. Results showed a high content of Fe > 60 wt% in most of the hematite ore samples, except banded hematite quartzite (BHQ) (< 47 wt%).

Fluid inclusions and C–H–O–S–Pb isotope systematics of the Caixiashan sediment-hosted Zn-Pb deposit, eastern Tianshan, northwest China: Implication for ore genesis

2020 ◽  
Vol 119 ◽  
pp. 103404
Author(s):  
Kang Wang ◽  
Yin-Hong Wang ◽  
Chun-Ji Xue ◽  
Jia-Jun Liu ◽  
Fang-Fang Zhang
Keyword(s):  
Fluid Inclusions ◽  
Northwest China ◽  
Pb Isotope ◽  
Ore Genesis ◽  
Eastern Tianshan ◽  
Isotope Systematics

Fluid inclusions, isotopes and mineralogy of the Kuruer epithermal Cu-Au deposit, Chinese Western Tianshan: Implications for ore genesis and exploration

2021 ◽  
pp. 104385
Author(s):  
Yi-Wei Peng ◽  
Xue-Xiang Gu ◽  
Guo-Xiang Chi ◽  
Yong-Mei Zhang ◽  
Kai-Pei Zhao ◽  
...  
Keyword(s):  
Fluid Inclusions ◽  
Ore Genesis ◽  
Western Tianshan
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