新疆阿尔泰钾长石矿物学特征及开发利用

阿尔泰钾长石是新疆优势非金属矿产资源之一，主要赋存在花岗伟晶岩矿脉、钾长花岗岩和碱性花岗岩中，钾长石资源储量大、品位高，易采易选，但尚未很好开发利用。通过阿尔泰钾长石矿物的物理特征、光学性质、化学成分以及工艺矿物学特征的研究，阐述了钾长石资源在工农业中的应用状况和应用范围，经与国内同类型矿种对比，指出新疆阿尔泰钾长石开发利用有着广阔的前景。     

生产玻璃,陶瓷的原料—钾长石《长石粉》

介绍了钾长石在工业、农业、化工等方面的用途及含钾岩石的开发利用情况。     

蠕状石成因研究的新进展

重点介绍了蠕状石成因的研究现状和目前流行的几种成因假说，并对其进行了讨论和评价，尤其对“出溶硅氧泵模式”假说的蠕状石出溶的原理、过程和“硅氧泵”的实验机理、数据等、做了较为详尽的阐述。     

长石矿物的三维热释光谱图研究

通过最新研制的三维热释光光谱测量仪器，对长石热释光光谱的分析，,可以寻找其各个波段热释光信号的响应灵敏度差异。测试结果表明，长石矿物不同波长段的热释光量随辐照剂量的增加，呈现不同的增长特性；同时，长石热释光谱图显示出热释光信号光谱的红光／红外光波段的能量释放比相应蓝／紫光波段的能量的释放，提前大约10℃产生，但是各自能量释放的峰值几乎发生在同一温度处。样品发出的热释光中红光部分的峰峰值与紫光部分的峰峰值相比较，有明显的差别，三维谱图显示出该样品分布在从绿光波段直到红光／远红外光波段（500－850nm）的热释光量，明显比分布在紫光波段附近的相应热释光量要大的多。     

钾长石制备X型分子筛的试验研究

以长白山天然钾长石矿为原料,采用水热合成法制备了X型沸石分子筛,对影响合成工艺和产物性能等因素进行了研究.试验表明,反应混合物的配比:水钠比、硅铝比,反应过程中的搅拌速度及凝胶混合物的陈化是合成分子筛的关键工艺参数;晶化12 h是合成反应的最佳结晶时间;产物的吸附量达到了国家化学工业产品标准.     

Environmental Effects of Micro- and Ultra-microchannel Structures of Natural Minerals

The micro-channels usually refers to structural channels of minerals with aperture in the range of 0.3 nm to 2.0 nm. Such microchannels include, Mn-O octahedron channel filled by K in cryptomelane, and channel constructed by Si-O and AI-O tetragonal molecular sieve filled by Na and Ca in zeolite, and effectively have the function of molecular sieve. Here we point out that ultramicrochannels of natural minerals have apertures below 0.3 nm with the features of ionic sieves. The ultra-microchannels of mineral feldspar, accounting for half mass of the Earth＇s crust, have been largely ignored because the aperture is too small. In this work, we present that feldspar displays a certain degree of ion exchange and owns a feature of channel structure under both high and low temperatures. At high temperature, Na^＋ can enter the channels of feldspars. The content of Na2O in feldspar increases up to 15.9%. At middle temperature, Pb^2＋ can also enter the channels of feldspar as the result of ion exchange, leading thus to the formation of Pb-feldspar. At room temperature, about 97.94% Cd^2＋ can be removed and Cd-feldspar can be obtained. These phenomena indicate typical effects of ultra-microchannels of feldspar, which may be suggested as a potential for the treatment of heavy metal pollution and nuclear waste. The ultra-microchannels of natural minerals have played special role in migration and exchange of geomaterials. The molecular sieves of microchannels of a few natural minerals have the property of purifying molecular gas pollution. And the ionic sieves of ultramicrochannels of most natural minerals can purify ionic water contaminates.     

大别山沙村辉长岩中长石的结构水及其对岩浆演化的指示

本文报道了大别山沙村地区碰撞后辉长岩的化学组成和其中斜长石的傅立叶变换红外光谱(FTIR)分析结果。10个辉长岩从化学组成上分为两组,代表了两个不同的岩浆。斜长石普遍含有结构水,以OH-的形式存在,含量为213×10-6~658×10-6(H2O的质量分数)。结合大别山榴辉岩的数据来看,由长石中结构水含量推测的原始岩浆的富水特征可能与其源区中含有俯冲断离的榴辉岩有关。两组辉长岩中的长石都表现出水含量与全岩Mg#值的负相关关系,即随着结晶分异的进行,岩浆中的水含量在逐渐减少。这可能是由于角闪石的连续结晶和/或岩浆的去气作用造成的。沙村长石水含量与全岩Mg#值之间的相关性说明后期热液蚀变事件没有改变长石中的水,它们依然有效地保存了原始信息。     

阿尔泰造山带的铅同位素地质及其构造意义

阿尔泰遣山带中各构造带混合岩、片麻状花岗岩、钾长花岗岩的17个单矿物长石铅同位素测试分析表明:阿尔泰造山带中普遍存在前海西基底,模式年龄l₁年龄段为:1286²483Ma,对应着陆壳的增生事件及初始成岩年龄.模式年龄l₂年龄段为:389⁴12Ma,311³46Ma,166¹96Ma,分别对应着晚志留-海西早期大陆裂谷作用;海西中晚期强烈挤压遣山和斜向逆冲及印支期造山期后花岗岩的侵入作用.t₂中各时间段与各构造环境的判别相吻合.     

Bioturbation and erosion rates along the soil-hillslope conveyor belt,part 1: Insights from single-grain feldspar luminescence

The interplay of bioturbation, soil production and long-term erosion–deposition in soil and landscape co-evolution is poorly understood. Single-grain post-infrared infrared stimulated luminescence (post-IR IRSL) measurements on sand-sized grains of feldspar from the soil matrix can provide direct information on all three processes. To explore the potential of this novel method, we propose a conceptual model of how post-IR IRSL-derived burial age and fraction of surface-visiting grains change with soil depth and along a hillslope catena. We then tested this conceptual model by comparison with post-IR IRSL results for 15 samples taken at different depths within four soil profiles along a hillslope catena in the Santa Clotilde Critical Zone Observatory (southern Spain). In our work, we observed clear differences in apparent post-IR IRSL burial age distributions with depth along the catena, with younger ages and more linear age–depth structure for the hill-base profile, indicating the influence of lateral deposition processes. We noted shallower soils and truncated burial age–depth functions for the two erosional mid-slope profiles, and an exponential decline of burial age with depth for the hill-top profile. We suggest that the downslope increase in the fraction of surface-visiting grains at intermediate depths (20 cm) indicates creep to be the dominant erosion process. Our study demonstrates that single-grain feldspar luminescence signature-depth profiles provide a new way of tracing vertical and lateral soil mixing and transport processes. In addition, we propose a new objective luminescence-based criterion for mapping the soil-bedrock boundary, thus producing soil depths in better agreement with geomorphological process considerations. Our work highlights the possibilities of feldspar single grain techniques to provide quantitative insights into soil production, bioturbation and erosion–deposition. © 2019 The Authors. Earth Surface Processes and Landforms Published by John Wiley & Sons Ltd.     

胶东谢家沟金矿床蚀变钾长石40Ar-39Ar年龄及地质意义

谢家沟金矿床位于胶西北焦家断裂带和招平断裂带之间。在系统观察坑道各类蚀变现象的基础上,发现围岩蚀变主要有钾长石化、硅化、黄铁矿化、绢云母化,其次可见绿泥石化和碳酸盐化等;基于蚀变的叠加和穿插关系查明了不同阶段的主要热液作用记录,从早到晚依次为钾长石化、黄铁绢英岩化、陡立石英硫化物细脉;蚀变具有明显的空间分带现象,从中心到两侧分别为陡立石英硫化物细脉带、黄铁绢英岩化带、钾长石化带。本次研究对蚀变钾长石开展了⁴⁰Ar-³⁹Ar精细测年工作,获得的坪年龄为（112.79±0.62）Ma（MSWD=5.76）,与等时线年龄（（115.56±1.72）Ma（MSWD=4.59））一致,限定了谢家沟金矿床的钾化蚀变年龄,与胶东地区获得的金成矿事件年龄相近,说明谢家沟金矿床与胶东地区金矿床是在同一成矿-热事件下形成的。结合区域岩浆演化特征,胶东地区在郭家岭岩体形成之后、在（120±10）Ma还存在一期与金成矿关系密切的岩浆活动。