论文部分内容阅读
东秦岭泥盆纪山阳－柞水成矿区内众多层控贱金属硫化物矿床含矿层中含有相当比例的电气石，这些电气石属于黑电气石－镁电气石类质同象系列，一般Ｍｇ＞Ｆｅ、Ｎａ＞Ｃａ（阳离子比较），明显的成分环带记录了主成矿期的海底（喷气）热液沉积成矿方式和随后的区域变质及热液叠加过程，在主成矿期形成的电气石的化学成分［ＦｅＯ／（ＦｅＯ＋ＭｇＯ）＝０．３４—０．３９］和硼同位素组成（δ１１Ｂ＝－７．６—－８．８）与海底（喷气）热液沉积成因块状硫化物矿床中电气石相似。由此，进一步证实了成矿区内层控矿床主成矿期的海底（喷气）热液沉积成因方式
In the East Qinling Devonian Sanyang - Zhashui mineralization many layers of controlled base metal sulfide deposits containing a considerable proportion of tourmaline tourmaline, tourmaline belongs to the black tourmaline - magnesium Tourmaline isomorphism series, the general Mg > Fe and Na> Ca (cation comparison). The obvious component zoning records the submarine (jet) hydrothermal sedimentary mineralization and the subsequent regional metamorphism and hydrothermal superposition process during the main mineralization. (FeO / (FeO + MgO) = 0.34-0.39] and boron isotopic compositions (δ11B = -7.6 - 8.8) and the seabed (jet) hydrothermal sedimentary formation blocks Like sulfide tourmaline similar. Therefore, it is further confirmed that the sea floor (jet) hydrothermal sedimentary genesis pattern during the main mineralization stage of the ore-hosting area