论文部分内容阅读
东秦岭超大型钼矿带是世界上重要的钼矿带之一，带内分布着几个大型至超大型钼矿床。与这些大型－ 超大型钼矿床有关的岩体顶部都发育了钾长石石英条纹岩。钾长石石英条纹岩中钾长石富Ｓｉ，Ｋ，贫Ｎａ；其三斜度、有序度低。石英包裹体中Ｆ－ ，Ｋ＋高，ＣＯ／ＣＯ２ 低，缺少ＣＨ４，形成温度为４００℃～５００℃。氢氧同位素分析表明：δ１８ Ｏ＝ ９．０６×１０－ ３ ～１０．０３×１０－ ３ ，δＤ＝ － ５７．２２×１０－ ３ ～－ ７５．１０×１０－ ３ ，证明钾长石石英条纹岩的物质来自晚期岩浆热液。
The East Qinling ultra-large molybdenum belt is one of the most important molybdenum ore belts in the world. There are several large-to-large molybdenum deposits in the belt. Potash feldspar-quartz striated rocks are developed on top of the rock mass associated with these large-scale super-large molybdenum deposits. Potash feldspar quartz fringe rock rich in potassium feldspar Si, K, poor Na; its three slopes, low order. Quartz inclusions F-, K + high, CO / CO2 low, the lack of CH4, the formation temperature of 400 ℃ ~ 500 ℃. Oxygen and oxygen isotope analysis showed that: δ18 O = 9.06 × 10-3 ~ 10.03 × 10-3, δD = -57.22 × 10-3 ~ -75.10 × 10- 3, Quartz striated rocks come from late magmatic hydrothermal fluids.