🌟 Exciting Research Alert! 🌟 📢 We’re thrilled to announce our latest publication in Minerals MDPI (Volume 14, Issue 12): 🖼 Cover Story: Transformation of Mackinawite to Interlayered Greigite-Pyrrhotite and Pyrite in the Gaoping Submarine Canyon Sediments off Southwestern Taiwan 📖 Read the full article: https://lnkd.in/d5ZxVzUQ ✍ Authors:Ko-Chun Huang & Wei-Teh Jiang 🏢 Affiliation: National Cheng Kung University 🔬 Research Highlights: ✨ Discovery of Metastable Greigite-Pyrrhotite Layers Interlayered greigite-pyrrhotite forms through epitactic segments of cubic and hexagonal close-packed sulfur atoms, transitioning to pyrite in sulfidization zones. 🪨 Mackinawite Preservation at Depth Deeper sediments contain largely preserved mackinawite within iron-monosulfide micronodules, showing partial replacement but minimal pyrite neoformation. ⚙️ Unique Topotactic Relationships The transformation aligns as ⟨110⟩Grg//⟨110⟩Po//⟨100⟩Mkw and {111}Grg//(001)Po//~{011}Mkw, driven by dissolution and epitactic reprecipitation. 🌱 Mechanism of Change A process involving interface-coupled dissolution and reprecipitation, with partial oxidation, creates intertwined greigite and pyrrhotite layers. These findings provide critical insights into mineralization and sulfidization processes in marine sediments. 🌊 📢 Stay tuned for more updates! #Geoscience #MarineSediments #Mineralogy #Sulfidization #ScientificResearch 👉 Follow Minerals MDPI for more groundbreaking studies in mineral science!
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📜 New #paper in Minerals MDPI! ⭐ The Crystal Chemistry and Structure of V-Bearing Silicocarnotite from Andradite–Gehlenite–Pseudowollastonite Paralava of the Hatrurim Complex, Israel⭐ ✍ Evgeny Galuskin, Irina Irina Galuskina, Maria Książek, Joachim Kusz, Yevgeny Vapnik and Grzegorz Zieliński 📜 Read/Download paper at 👉 https://lnkd.in/dZgf7C7F 🏫 University of Silesia in Katowice 🏫 Ben-Gurion University of the Negev 🏫 Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy Follow 👉 Minerals MDPI ⚒ #minerals #article #openaccess #mdpi
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✨Excited to announce the publication of our latest research article: "𝘼𝙨𝙨𝙚𝙨𝙨𝙢𝙚𝙣𝙩 𝙤𝙛 𝙎𝙚𝙡𝙚𝙘𝙩𝙞𝙫𝙚 𝙌𝙪𝙖𝙧𝙩𝙯 𝙁𝙡𝙤𝙩𝙖𝙩𝙞𝙤𝙣 𝙞𝙣 𝙋𝙝𝙤𝙨𝙥𝙝𝙖𝙩𝙚 𝘽𝙚𝙣𝙚𝙛𝙞𝙘𝙞𝙖𝙩𝙞𝙤𝙣: 𝘼 𝙒𝙖𝙨𝙩𝙚-𝙩𝙤-𝙋𝙧𝙤𝙙𝙪𝙘𝙩 𝙎𝙤𝙡𝙪𝙩𝙞𝙤𝙣 𝙛𝙤𝙧 𝙏𝙖𝙞𝙡𝙞𝙣𝙜𝙨 𝙑𝙖𝙡𝙤𝙧𝙞𝙯𝙖𝙩𝙞𝙤𝙣." Published in Separation and Purification Technology. This study highlights the recovery of 𝗵𝗶𝗴𝗵-𝗾𝘂𝗮𝗹𝗶𝘁𝘆 𝗾𝘂𝗮𝗿𝘁𝘇 𝗰𝗼𝗻𝗰𝗲𝗻𝘁𝗿𝗮𝘁𝗲, suitable for industrial applications while reducing the silicate content in the phosphate concentrate to 𝗺𝗶𝗻𝗶𝗺𝗮𝗹 𝗹𝗲𝘃𝗲𝗹𝘀. It also addresses t𝗵𝗲 𝗰𝗵𝗮𝗹𝗹𝗲𝗻𝗴𝗲𝘀 𝗼𝗳 𝗾𝘂𝗮𝗿𝘁𝘇 𝗳𝗹𝗼𝘁𝗮𝘁𝗶𝗼𝗻 in the presence of 𝗰𝗮𝗹𝗰𝗶𝘂𝗺-𝗯𝗲𝗮𝗿𝗶𝗻𝗴 𝗺𝗶𝗻𝗲𝗿𝗮𝗹𝘀 and introduces an optimized process that significantly improves flotation performance. Grateful to my co-authors 𝗬𝗮𝘀𝘀𝗶𝗻𝗲 𝗧𝗮𝗵𝗮, 𝗬𝗮𝘀𝘀𝗶𝗻𝗲 𝗔𝗶𝘁 𝗞𝗵𝗼𝘂𝗶𝗮, 𝗔𝗯𝗱𝗲𝗹𝗹𝗮𝘁𝗶𝗳 𝗘𝗹𝗴𝗵𝗮𝗹𝗶, 𝗥𝗮𝗰𝗵𝗶𝗱 𝗛𝗮𝗸𝗸𝗼𝘂, and 𝗠𝗼𝘀𝘁𝗮𝗳𝗮 𝗕𝗲𝗻𝘇𝗮𝗮𝘇𝗼𝘂𝗮 for their invaluable contributions! Check it out here: https://lnkd.in/efj8wBve
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Excited to share my latest research publication titled "The Role of Organic Matter and Hydrocarbons in the Genesis of the Pb-Zn-Fe (Ba-Sr) Ore Deposits in the Diapirs Zone, Northern Tunisia." published in Minerals (https://lnkd.in/dPJqMm4T).
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📎 Check Out the 10th paper published in the Special Issue "Geochemistry and Genesis of Hydrothermal Ore Deposits" in Minerals MDPI. 📜 Evolution of Auriferous Fluids in the Kraaipan-Amalia Greenstone Belts: Evidence from Mineralogical and Isotopic Constraints ✍ Authors: Kofi Adomako-Ansah, PhD, MSEG, MSGA, MSRG, MGhIG, MUTaG, Napoleon Q Hammond, Yuichi Morishita and Daizo Ishiyama 📍 More information about the paper can be found here: https://lnkd.in/ddhnApFB 📢 More information about Special Issue can be found here: https://lnkd.in/dHinmpiq 📚 Special issue is Edited by: Prof. Dr. Yuichi Morishita and Prof. Dr. Napoleon Q. Hammond University of Mines and Technology, Tarkwa University of Limpopo / Universiteit van Limpopo Shizuoka University Akita University ⚒ Follow Minerals MDPI for latest research. #callforpapers #mdpi #openaccess
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Formation of Copper Carbonate Copper carbonate can form through several processes: Weathering of Copper Ores: Copper carbonate minerals often form as a result of the weathering of primary copper sulfide ores, such as chalcopyrite (CuFeS2). As these ores are exposed to weathering processes, copper ions are released and can react with carbonate ions in the environment. Reaction with Carbon Dioxide: When copper salts are exposed to carbon dioxide in the presence of water, they can react to form copper carbonate. For example: Cu2++CO32−→CuCO3Cu2++CO32−→CuCO3 This reaction can occur in natural settings or in laboratory conditions. Biological Processes: Certain microorganisms can facilitate the precipitation of copper carbonate through biological processes. These organisms can alter the local chemistry, leading to the formation of copper carbonate minerals. Synthetic Production: Copper carbonate can also be synthesized in controlled laboratory conditions by reacting copper(II) salts with sodium bicarbonate or sodium carbonate. This method allows for the production of pure copper carbonate for industrial and research purposes. #mineral #metals #geology #rocks #earthsciences #education #explorationgeology #bhpo #riotinto #exploration
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How do high-grade rare earth element (REE) accumulations develop in regolith? Our 📜 *New Open Access Paper* 📜 , published today in Mineralium Deposita, discusses just that! In it, we find that localised REE accumulations of 12.37% total rare earth oxide (TREO) at the Kapunda Cu Mine in South Australia formed in response to the evolution of highly-acidic (pH < 3) weathering fluids. Contrary to popular belief (which suggests that acidic weathering fluids should favour REE *mobilisation* in regolith), these fluids expedited the dissolution of primary phosphate minerals (likely apatite), which resulted in the massive liberation of phosphate into the weathering solution. This phosphate then combined with dissolved REEs to precipitate and accumulate highly insoluble secondary minerals like rhabdophane, monazite and florencite - even under acidic conditions! As a passion project of mine for over 5 years now (having started as my MSc thesis), I am beyond happy to finally see this work published as the first chapter of my PhD. A massive thanks goes to Fang Xia, Caroline Tiddy and Ignacio Gonzalez-Alvarez for their patience and supervision over this time, as well as to co-authors joel brugger, Siyu (Shirley) Hu, Louise Schoneveld, Mark Pearce and Andrew Putnis for all of their invaluable contributions.
High-Grade REE accumulation in regolith: Insights from supergene alteration of an apatite-rich vein at the Kapunda Cu mine, South Australia - Mineralium Deposita
link.springer.com
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Global constraints on exhumation rates during porphyry copper formation and supergene enrichment: applications to exploration as illustrated from the Central Andes Evenstar et al. (2024): ....This paper uses new global datasets and previous work to review the critical processes required for porphyry copper formation and supergene enrichment. https://lnkd.in/eSSmyeff
Global constraints on exhumation rates during porphyry copper formation and supergene enrichment: applications to exploration as illustrated from the Central Andes - Mineralium Deposita
link.springer.com
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⚒️ #GözümüzYükseklerdeDeğilDerinlerde ⚒️ Fuchsite mineral is known as octahedral mica mineral containing chromium. chemical formula (KAl2(Al2 Si3 O10)(OH)2) represents an ideal muscovite mineral. Fuchsite mineral is formed by the entry of Cr into the system as a result of the reaction after metasomatism, and this formation can be shown as an example of supergene mineralization. In geochemical studies on fuchsite, before the fuchsite mineralization along the fault zones occurs in the host rock, It is suggested that CO₂+Cr, carried by fluids that come into equilibrium with ultramafic-mafic rocks, is formed as a result of the chemical reaction with these mica minerals. Research has shown that fuchsite minerals are widely developed in shear zones.
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🎉 I'm excited to share that our article "Geochemical reactions initiated by subglacial abrasion of natural quartz and alkali feldspar" was published in Frontiers in Earth Science! 🎉 Our research found that abrasion of silicate minerals produces bio-available gases and increases concentrations of various weathering products. A key finding was that trace carbonates in natural rocks significantly influence reaction outcomes, underscoring the complexity of geochemical processes in subglacial environments. I invite you to check out the full article here:
Frontiers | Geochemical reactions initiated by subglacial abrasion of natural quartz and alkali feldspar
frontiersin.org
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🚨 New Research Alert! 🚨 A billion-year shift in the formation of iron ore deposits A recent study from The University of Western Australia in collaboration with researchers from Curtin University, Rio Tinto and CSIRO Mineral Resources reveals that iron deposits in the Pilbara region are up to a billion years younger than previously thought. Professors Marco Fiorentini and Steffen Hagemann, co-authors of the study, used new techniques to date the iron minerals, discovering their formation coincided with the breakup and formation of supercontinents. The new ages proposed in the study for the formation of the largest ore deposits on Earth opens opportunities to establish genetic links between iron and other critical metals that are key to the global energy transition. Continue reading: https://lnkd.in/gUxVuntm
A billion-year shift in the formation of iron ore deposits
uwa.edu.au
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WIM100 2024| A/Prof. & Group Leader, MIWATCH at BRC-SMI University of Queensland
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