Partitioning of rare earths and some major elements in the Kizildere geothermal field, Turkey

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• 作者：Peter Mö ; ller ; Peter Dulski ; Nevzat Ö ; zgü ; r
• 关键词：Rare earth elements ; Yttrium ; Vapor– ; liquid partition ; Scale-liquid distribution ; Geothermal fluid ; Water/rock interaction ; Kizildere ; Turkey
• 刊名：Geothermics
• 出版年：2008
• 出版时间：April 2008
• 年：2008
• 卷：37
• 期：2
• 页码：132-156
• 全文大小：1059 K

文摘

Rare earth elements and yttrium (REY), Na⁺, K⁺, Cl⁻, and Ca²⁺ were determined in water, steam, mineral scale and rock samples from the Kizildere geothermal field, Turkey. The CO₂-rich parent fluid originates from a sequence of mica schists with marble intercalations. The chemistry of the parent fluid varies with location and time. The average REY composition of the fluids is derived by extrapolation to the lowest Ca concentrations. The apparent vapor–liquid partitioning factors for REY at 145 °C and 5 bar total absolute pressure are about 0.2, whereas for Ca²⁺, Na⁺, K⁺ and Cl⁻ they are <0.05, about 0.0005, 0.0005 and about 0.02, respectively. Apparent scale-liquid distribution coefficients for REY at 145 and 190 °C are about 0.15 and 0.55, whereas at 100 °C they increase from 0.3 (La) to 1.5 (Lu).