Cation leaching from the basalt JB-1a by 2M NaCl hydrothermal solutions

Etsuo Uchida, Ken Tsutsui

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    The basalt JB-1a was reacted with 2M NaCl solutions, and the leaching behavior of the cations Na, K, Ca, Mg, Fe, Mn, Zn and Co was monitored. The experiments were carried out using standard cold-seal pressure vessels in the temperature range from 300 to 800°C under the constant pressure of 1000 bars and also in the pressure range from 500 to 1000 bars at 600°C. The concentrations of Fe, Mn, Zn and Co in the hydrothermal solutions increased significantly with increasing temperature and with decreasing pressure. The thermodynamic analysis of the experimental results suggests that this is due to the formation of trichloro-complexes and also partly due to the temperature dependence of ion exchange between augite and aqueous chloride solution. The Na concentration in the aqueous solution decreases with increasing temperature and with decreasing pressure. On the other hand, the behavior of K, Ca and Mg is complex and their concentrations seem to be controlled by the coexisting minerals. Judging from the experimental results, it is concluded that the transition elements are effectively leached from the basalt under higher temperatures and lower pressures. This means that higher temperature and lower pressure conditions are preferable for the production of ore-forming hydrothermal solutions.

    Original languageEnglish
    Pages (from-to)93-102
    Number of pages10
    JournalResource Geology
    Volume50
    Issue number2
    DOIs
    Publication statusPublished - 2000 Jun 1

    Fingerprint

    Leaching
    Cations
    cation
    basalt
    leaching
    low pressure
    Temperature
    temperature
    Transition Elements
    augite
    transition element
    ion exchange
    Pressure vessels
    vessel
    aqueous solution
    Ores
    thermodynamics
    Seals
    Minerals
    chloride

    Keywords

    • Basalt
    • Cation leaching
    • Hydrothermal solution
    • Transition element
    • Trichloro-complex

    ASJC Scopus subject areas

    • Geology
    • Geochemistry and Petrology

    Cite this

    Cation leaching from the basalt JB-1a by 2M NaCl hydrothermal solutions. / Uchida, Etsuo; Tsutsui, Ken.

    In: Resource Geology, Vol. 50, No. 2, 01.06.2000, p. 93-102.

    Research output: Contribution to journalArticle

    @article{f093f0be7bce4b78a313c64693becb15,
    title = "Cation leaching from the basalt JB-1a by 2M NaCl hydrothermal solutions",
    abstract = "The basalt JB-1a was reacted with 2M NaCl solutions, and the leaching behavior of the cations Na, K, Ca, Mg, Fe, Mn, Zn and Co was monitored. The experiments were carried out using standard cold-seal pressure vessels in the temperature range from 300 to 800°C under the constant pressure of 1000 bars and also in the pressure range from 500 to 1000 bars at 600°C. The concentrations of Fe, Mn, Zn and Co in the hydrothermal solutions increased significantly with increasing temperature and with decreasing pressure. The thermodynamic analysis of the experimental results suggests that this is due to the formation of trichloro-complexes and also partly due to the temperature dependence of ion exchange between augite and aqueous chloride solution. The Na concentration in the aqueous solution decreases with increasing temperature and with decreasing pressure. On the other hand, the behavior of K, Ca and Mg is complex and their concentrations seem to be controlled by the coexisting minerals. Judging from the experimental results, it is concluded that the transition elements are effectively leached from the basalt under higher temperatures and lower pressures. This means that higher temperature and lower pressure conditions are preferable for the production of ore-forming hydrothermal solutions.",
    keywords = "Basalt, Cation leaching, Hydrothermal solution, Transition element, Trichloro-complex",
    author = "Etsuo Uchida and Ken Tsutsui",
    year = "2000",
    month = "6",
    day = "1",
    doi = "10.1111/j.1751-3928.2000.tb00059.x",
    language = "English",
    volume = "50",
    pages = "93--102",
    journal = "Resource Geology",
    issn = "1344-1698",
    publisher = "Wiley-Blackwell",
    number = "2",

    }

    TY - JOUR

    T1 - Cation leaching from the basalt JB-1a by 2M NaCl hydrothermal solutions

    AU - Uchida, Etsuo

    AU - Tsutsui, Ken

    PY - 2000/6/1

    Y1 - 2000/6/1

    N2 - The basalt JB-1a was reacted with 2M NaCl solutions, and the leaching behavior of the cations Na, K, Ca, Mg, Fe, Mn, Zn and Co was monitored. The experiments were carried out using standard cold-seal pressure vessels in the temperature range from 300 to 800°C under the constant pressure of 1000 bars and also in the pressure range from 500 to 1000 bars at 600°C. The concentrations of Fe, Mn, Zn and Co in the hydrothermal solutions increased significantly with increasing temperature and with decreasing pressure. The thermodynamic analysis of the experimental results suggests that this is due to the formation of trichloro-complexes and also partly due to the temperature dependence of ion exchange between augite and aqueous chloride solution. The Na concentration in the aqueous solution decreases with increasing temperature and with decreasing pressure. On the other hand, the behavior of K, Ca and Mg is complex and their concentrations seem to be controlled by the coexisting minerals. Judging from the experimental results, it is concluded that the transition elements are effectively leached from the basalt under higher temperatures and lower pressures. This means that higher temperature and lower pressure conditions are preferable for the production of ore-forming hydrothermal solutions.

    AB - The basalt JB-1a was reacted with 2M NaCl solutions, and the leaching behavior of the cations Na, K, Ca, Mg, Fe, Mn, Zn and Co was monitored. The experiments were carried out using standard cold-seal pressure vessels in the temperature range from 300 to 800°C under the constant pressure of 1000 bars and also in the pressure range from 500 to 1000 bars at 600°C. The concentrations of Fe, Mn, Zn and Co in the hydrothermal solutions increased significantly with increasing temperature and with decreasing pressure. The thermodynamic analysis of the experimental results suggests that this is due to the formation of trichloro-complexes and also partly due to the temperature dependence of ion exchange between augite and aqueous chloride solution. The Na concentration in the aqueous solution decreases with increasing temperature and with decreasing pressure. On the other hand, the behavior of K, Ca and Mg is complex and their concentrations seem to be controlled by the coexisting minerals. Judging from the experimental results, it is concluded that the transition elements are effectively leached from the basalt under higher temperatures and lower pressures. This means that higher temperature and lower pressure conditions are preferable for the production of ore-forming hydrothermal solutions.

    KW - Basalt

    KW - Cation leaching

    KW - Hydrothermal solution

    KW - Transition element

    KW - Trichloro-complex

    UR - http://www.scopus.com/inward/record.url?scp=0037990302&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0037990302&partnerID=8YFLogxK

    U2 - 10.1111/j.1751-3928.2000.tb00059.x

    DO - 10.1111/j.1751-3928.2000.tb00059.x

    M3 - Article

    VL - 50

    SP - 93

    EP - 102

    JO - Resource Geology

    JF - Resource Geology

    SN - 1344-1698

    IS - 2

    ER -