Article
Engineering, Chemical
Guiyong Zhou, Ning Wang, Wei Xu, Guotao Hu, Hannian Gu
Summary: In this study, selective sequential extraction and microanalysis methods were used to investigate the distribution and occurrence modes of arsenic in phosphate ore. It was found that arsenic mainly existed in carbonate minerals, oxides/hydroxides, and sulfide minerals fractions, with a small portion in the exchangeable and soluble fraction. Microanalysis revealed that iron oxides/hydroxides, rhodochrosite particles, and pyrite were the main arsenic-containing minerals. These findings provide valuable insights for developing techniques to remove arsenic from phosphate ores.
MINERALS ENGINEERING
(2023)
Article
Geochemistry & Geophysics
Huan Li, Da-Peng Zhu, Li-Wei Shen, Thomas J. Algeo, Safiyanu Muhammad Elatikpo
Summary: This study investigates the metasediment-hosted Sb-(Au-W) deposits in the Jiangnan Orogen and establishes a general ore formation model for this type of deposit. The results suggest that early-stage gold mineralization may be related to orogeny, while late-stage antimony mineralization may be influenced by deep granitic magmatism. Local metasedimentary rocks and granite magmatism provide metals and ligands for mineralization, with magmatic fluids playing an essential role in late-stage ore formation.
Article
Engineering, Environmental
Jullieta E. Lum, Valerie A. Schoepfer, Heather E. Jamieson, Joyce M. McBeth, Anezka Borcinova Radkova, Mary P. Walls, Matthew B. J. Lindsay
Summary: Historical mining and mineral processing at Giant Mine in Yellowknife, Canada, has left a legacy of arsenic and antimony contamination. The stored arsenic trioxide roaster waste (ATRW) was found to primarily consist of arsenolite, but also showed minor associations with iron oxides. The presence of different forms of arsenic and antimony has implications for the environmental behavior and remediation of ATRW. Overall, this study provides important insights into the phase associations and environmental fate of ATRW solids.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Geology
Beata Naglik, Tomasz Tobola, Magdalena Dumanska-Slowik, Dimitrina Dimitrova, Pawel Derkowski, Grzegorz Zielinski, Ryszard Habryn, Weronika Nadlonek
Summary: The study investigated the characteristics and content analysis of the four generations of pyrite from the porphyry-type Mo-Cu-W deposit, revealing the sequence of metal deposition in the ore system and the distribution of various trace elements in pyrite at different stages.
ORE GEOLOGY REVIEWS
(2022)
Article
Geochemistry & Geophysics
Masroor Alam, Sheng-Rong Li, M. Santosh, Tehseen Zafar, Zahid Hussain, Mao-Wen Yuan, Hawas Khan
Summary: The Karakoram Block in North Pakistan formed during the late Permian-Triassic on the southern margin of Asian Plate with a topography characterized by glaciated high mountains. Several rivers and streams draining from these mountain peaks carry detritus with precious and base metals. However, the primary source deposits and their ore genesis remain unknown due to the rugged glaciated topography and inaccessibility for prospecting and in situ sampling.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2023)
Review
Environmental Sciences
Alan Levett, Emma Gagen, Anat Paz, Paulo Vasconcelos, Gordon Southam
Summary: Remediating iron ore mines in Brazil faces a unique challenge of restoring unique rupestrian ecosystems and rare plant species. Developing a substrate similar to iron-rich cap rock and accelerating iron cement formation to stabilize crushed materials, restore hydrology, and revegetate with native species are key elements for successful remediation programs. Understanding biological processes that contribute to canga evolution can lead to environmentally friendly strategies for iron ore mine remediation in the future.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Geochemistry & Geophysics
Alicia Fischer, James Saunders, Sara Speetjens, Justin Marks, Jim Redwine, Stephanie R. Rogers, Ann S. Ojeda, Md Mahfujur Rahman, Zeki M. Billor, Ming-Kuo Lee
Summary: This study improved upon methods to remove arsenic from arsenic-contaminated aquifers and successfully sequestered arsenic from groundwater in the form of arsenian pyrite. The experimental results validated the effectiveness of this method in remediation of groundwater arsenic contamination.
Article
Engineering, Environmental
Akihide Kamata, Masato Ueshima, Hirofumi Sakanakura, Toshihiko Miura, Masahiko Katoh
Summary: This study evaluated the re-release of arsenic from excavated rock in the presence of sulfate ions under different redox conditions. The results showed that the re-release of arsenic was mainly regulated by iron dissolution, even in the presence of sulfate ions. This suggests that excavated marine sedimentary rock should be reused under redox conditions where iron is not reduced or treated with chemical immobilization.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Environmental Sciences
Amelia Corzo Remigio, David A. Rubinos, Antony van der Ent, Mansour Edraki
Summary: This study analyzed an abandoned tin mining tailings facility in tropical north Queensland, Australia, identifying arsenic and tin as the main contaminants with limited mobility and bioavailability. The research provides insights into the biogeochemical properties of the tailings and the fate of arsenic, as well as how native plants can adapt and thrive in this challenging environment, potentially guiding future phytostabilization efforts.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Engineering, Chemical
Lev O. Filippov, Inna Filippova, Gabriel Crumiere, Rui Sousa, Mario Machado Leite, Ana Botelho de Sousa, Chloe Korbel, Sunil Kumar Tripathy
Summary: A mineralogical study of Goncalo lithium-bearing mica-rich pegmatite ore in Portugal reveals the use of optical ore sorting and flotation techniques to produce a marketable Li pre-concentrate product for metallurgy and reject for the ceramic industry.
MINERALS ENGINEERING
(2022)
Article
Environmental Sciences
Tengteng Shi, Baoqiang Xu, Jilin He, Xinyang Liu, Zibin Zuo
Summary: Efficient and environmentally safe release of arsenic in copper smelting flue dust (CSFD) is challenging for the industry due to complex conditions and composition. This study simulated the roasting process of pyrite and CSFD in vacuum and analyzed the release process and interaction mechanism of arsenic. The addition of pyrite facilitated the volatilization of stable arsenate in CSFD, resulting in a significant reduction of arsenic content. The findings have importance for developing arsenic-containing hazardous waste treatment routes and innovative technical approaches.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Abdul Qayoom Memon, Shoaib Ahmed, Zulfiqar Ali Bhatti, Ghulamullah Maitlo, Abdul Karim Shah, Shaukat Ali Mazari, Atta Muhammad, Abdul Sattar Jatoi, Ghulam Abbas Kandhro
Summary: The indigenous hematite iron ore was chemically activated to remove arsenic efficiently under specific conditions. Langmuir and Freundlich isotherms were used to evaluate adsorption potential, with a maximum adsorption capacity observed through Langmuir isotherm. Kinetics of arsenic adsorption showed the best fit with pseudo-first-order kinetics. Characterization of the hematite iron ore before and after arsenic adsorption was conducted using XRD, SEM, and EDX.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Nan Fang, Qiang He, Long Sheng, Yanhua Xi, Liping Zhang, Hongwei Liu, Huicai Cheng
Summary: Norfloxacin, a commonly detected antibiotic, can be effectively removed by iron ore waste. The adsorption process reaches equilibrium at 72 hours, with the primary mechanism being cation exchange. This study found that iron ore waste has the potential for removing environmental pollutants in aquatic environments.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Geochemistry & Geophysics
Abu Saeed Baidya, Atlanta Sen, Dipak C. Pal, Dewashish Upadhyay
Summary: The Khetri Copper Belt in western India likely hosts iron oxide-copper-gold mineralization, with sulfide mineralization associated with various types of alteration reflecting changing fluid composition. The presence of different pyrite vein types and their relationship with alteration suggests a complex mineralization process involving different fluid compositions.
MINERALIUM DEPOSITA
(2021)
Article
Geology
Huajie Tan, Yongjun Shao, Qingquan Liu, Yu Zhang, Yuzhou Feng, Yuce Zhang, Sajjad Ahmad Shah
Summary: The Xiaojiashan gold deposit in the northeastern Hunan region is characterized by multi-stage pyrite formation. It is likely associated with early metamorphism and late magmatic-hydrothermal overprinting, and its ore-forming process recorded the complexity of gold mineralization in NE Hunan.
ORE GEOLOGY REVIEWS
(2022)