Unusual Ore Mineralization of Siliceous Rocks in the Southern Kambalny Central Thermal Field (Kamchatka)

IF 0.7 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Doklady Earth Sciences Pub Date : 2024-09-04 DOI:10.1134/s1028334x24603535

G. A. Palyanova, S. N. Rychagov, E. N. Svetova, T. N. Moroz, Yu. V. Seryotkin, E. I. Sandimirova, N. S. Bortnikov

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Abstract

Samples of siliceous rocks of the Southern Kambalny Central Thermal Field (SKC) containing a unique ore mineralization were studied. Optical microscopy, scanning electron microscopy, X-ray microanalysis, X-ray diffraction, ICP-MS, and Raman spectroscopy were used in this study. High concentrations and a wide range of rare and rare-earth elements were found in siliceous rocks. Silicates (quartz, moganite, and opal-crystobalite/tridymite opal), oxides (hematite and anatase), hydroxides (goethite), carbonates (calcite with Fe and Mn impurities), sulfates (barite with Sr impurity and gypsum), sulfides (pyrite, marcasite, chalcopyrite, and chalcocite), phosphates (xenotime-Y, YPO₄ with impurities of lanthanides, S, Ca, and As; berlinite, AlPO₄ with the V impurity), and apatite were identified. Structures of anatase replacement by quartz often in association with pyrite were identified. The mineralization of SKC siliceous rocks reflects the physicochemical specificity of deep metal-bearing solutions.

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堪察加州南坎巴尔尼中央热田硅质岩的非同寻常的矿化现象

摘要对含有独特矿化物的南坎巴尔尼中央热田硅质岩样本进行了研究。研究中使用了光学显微镜、扫描电子显微镜、X 射线显微分析、X 射线衍射、ICP-MS 和拉曼光谱。在硅质岩中发现了高浓度和多种稀有稀土元素。硅酸盐（石英、莫甘石和蛋白石-闪长石/翠榴石蛋白石）、氧化物（赤铁矿和锐钛矿）、氢氧化物（网纹石）、碳酸盐（含铁和锰杂质的方解石）、硫酸盐（含 Sr 杂质的重晶石和石膏）、硫化物（黄铁矿、闪锌矿、黄铜矿和白钨矿）、磷酸盐（氙Y、含镧系元素、S、Ca 和 As 杂质的 YPO4；和磷灰石。发现了锐钛矿被石英置换的结构，通常与黄铁矿伴生。SKC 硅质岩的矿化反映了深层含金属溶液的物理化学特异性。

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来源期刊

Doklady Earth Sciences 地学-地球科学综合

CiteScore

1.40

自引率

22.20%

发文量

138

审稿时长

3-6 weeks

期刊介绍： Doklady Earth Sciences is a journal that publishes new research in Earth science of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.