再论偏岭石与变高岭石的区别——评《天然烧变高岭石中水铝英石的发现》一文

《矿物学报》１９９５年第４期发表了何宏平的“天然烧变高岭石中水铝英石发现”一文。该文用核磁共振谱中－７９．０×１０－６附近的谱峰，认为该信号来自水铝英石，而不是来自Ａｌ－Ｓｉ尖晶石。这种说法较合理，因刘长龄早就阐明偏岭石在成岩阶段由水铝英石变来。但是我们不同意“天然煤烧变高岭石经后期水化作用变成水铝英石”的观点，而主张“水铝英石是沼泽相原生沉积的；在成岩作用中转变为偏岭石不是煤烧的，有一些理化性质与变高岭石的不同”     

蒙脱石中Cu2+的吸附态研究

对在ＰＨ≤４．５、痕量浓度条件下吸附了Ｃu＾２＋的蒙脱石的Ｘ射线衍射（ＸＲＤ）进 行了研究。该蒙脱石的ｄ（００１）由原始蒙脱石的１．４７９ｎｍ变为１．５２３ｎｍ,说明水合铜离子置换了蒙脱石的层间阳离子;在该蒙脱石的ＥＰＲ谱中记录到了ｇ＝２．０７、ｇ ＝２．１４精细结构线和ｇ为约２．７～２．２超精细结构线三组有关Ｃu＾２＋ 的信号,说明其中的Ｃu＾２＋有三种不同的结构状态。同时,该蒙脱石热处理产物的ＥＰ     

古剂量勘查技术

本文首次报道了我国 An晕勘查法和石英电子自旋共振勘查法的理论和实现该方法研制出的微机化仪器和测量技术 ,以及古剂量勘查法应用于拉拉铜矿中得到的新认识     

Pore Structure and Permeability Characterization of High‐rank Coal Reservoirs: A Case of the Bide‐Santang Basin,Western Guizhou,South China

The methods of nuclear magnetic resonance(NMR)spectroscopy,mercury injection porosimetry(MIP),and gas-water relative permeability(GWRP)were used to reveal the pore structure and permeability characteristics of high-rank coal reservoirs in the Bide-Santang basin,western Guizhou,South China,to provide guidance for coalbed methane(CBM)exploration and exploitation and obtain direct insights for the development of CBM wells.The results indicate that the coal reservoirs in the study area are characterized by well-developed adsorption pores and poorly developed seepage pores.The bimodal NMR transverse relaxation time(T2)spectra and the mutation in the fractal characteristic of the MIP pore volume indicate poor connectivity between the adsorption pores and the seepage pores.As a result,the effective porosity is relatively low,with an average of 1.70%.The irreducible water saturation of the coal reservoir is relatively high,with an average of 66%,leading to a low gas relative permeability under irreducible water saturation.This is the main reason for the low recovery of high-rank CBM reservoirs,and effective enhanced CBM recovery technology urgently is needed.As a nondestructive and less time-consuming technique,the NMR is a promising method to quantitatively characterize the pores and fractures of coals.     

基于核磁共振技术的大理岩三轴压缩损伤规律研究

岩样为大理岩,进行了围压20 MPa、不同轴压的常规三轴压缩试验和核磁共振测试试验,测得大理岩在三轴压缩后的应力-应变曲线、弛豫时间T2谱分布和孔隙度,建立了孔隙度与损伤度之间的函数关系。结果表明,（1）孔隙度和轴压比的拟合函数显示,随着轴压的增加,大理岩孔隙度呈指数增长;轴压比小于70%时,大理岩产生弹性变形,孔隙度增长较小,轴压比处于70%～90%阶段时,大理岩以塑性变形为主,孔隙度明显增大,轴压比大于90%时,大理岩产生强烈扩容,孔隙度成倍增长;（2）大理岩内部裂隙数量和裂纹开度均随着轴压的增大而不断增大;（3）损伤度与孔隙度或轴压比的函数关系表明,随着轴压比的增大,大理岩的损伤度不断增大,相同外荷载产生的有效应力也不断增大。     

“V^2＋离子在刚玉中的位置的研究

据Ｖ＾２＋离子在刚玉中的电子顺磁共振谱，我们研究了它在刚玉中的位置，研究结果表明：Ｖ＾２＋离子并不占据准确的Ａｌ＾３＋离子位置，而是沿着ｃ轴向氧八面体中心位移大约０．００４ｎｍ。位移方向和本文提出的刚玉中的杂质离子位移模型是一致的。     

国内外寻找隐伏矿化探新方法研究进展

简要总结了根据超显微镜物质的迁移吸附机制和矿物结构与成矿物关系寻找隐伏矿的化探新方法的原理,技术及试验应用效果,预计这些方法技术近期内在寻找隐伏矿及解决环境,地震预报,地热工发等研究领域发挥重要作用。     

辐照条件下绿柱石通道中顺磁配合物的ESR行为

四川平武贫铁富碱型无色绿柱石通道中主要存在碱氢化物（NaH)、[Fe2(OH)4]^2 多聚合离子及OH自由基，在电子辐照作用下，通道中顺磁配合物的结构、带电性质及化学键易发生转型、裂解和变价，并形成自旋浓度不等的[H^0]i心（裂距为500G,g值分别为2．175，1．8774的二重超精细结构线）、[Fe^3 ]OH(g=2.0031)和[Fe4^3 ]s(g=4.3172)等辐照损伤心。[Fe^3 ]OH心属一种有效的电子陷阱，其热稳定性大于[Fe4^3 ]s心。绿柱石杂质铁离子的占位方式，与成矿物理、化学条件及成矿流体的pH值密切相关。由电子辐照作用而导致杂质离子价态的转变，属一种可逆的动态平衡过程。     

Approximate Analytical Theory of Satellite Orbit Prediction Presented in Spherical Coordinates Frame

A comparative review of analytic theories for the motion of Earth satellites in quasi-circular orbits written in the spherical coordinate frame is presented. The theory of motion is developed for satellites in quasi-circular and quasi-equatorial orbits subjected to geopotential, luni-solar and solar radiation pressure force perturbations. The intermediate orbit is Keplerian and the equations of motion are solved by the Lyapunov–Poincaré small parameter method. Both resonant and non-resonant cases are considered. The results can be useful for the development of a complete theory of weakly eccentric orbits.