| 1. | These changes reflect the effects of burial diagenesis on the originally deposited clay mineral assemblage .
这种变化反映了埋藏成岩作用对原来沉积的粘土矿物组合的影响。 |
| 2. | Authigenic mineral assemblage formed in different ambients is distinct to each other
两种环境下形成的自生矿物组合截然不同。 |
| 3. | For most of independent gold deposits , especially those of vein type , the ore mineral assemblages and mineral sequences are similar
摘要绝大多数独立金矿床，特别是脉状金矿的矿石矿物组合及其成矿阶段都是十分相似的。 |
| 4. | Based on the authigenic and clay mineral assemblage , two types of diagenetic ambient have been recognized in the meso - cainozoic detrital rocks in tarim basin
根据自生矿物与粘土矿物组合，在塔里木中新生界碎屑岩中可以识别出两种成岩环境。 |
| 5. | The sediment - environment , the mineral assemblages , and influence of marine are the main geologic factors of the contents and distribution patterns of rare - earth element in the coals
煤的沉积环境、煤中无机矿物的组成以及海水的影响是控制煤的稀土元素质量分数及其配分模式的主要地质因素。 |
| 6. | The contents of rare - earth element in coals are correlative to the contents of the ash of these coals , with a few of coal samples showing exceptional high contents of rare - earth element due to the presence of the heavy mineral assemblages
煤的稀土元素质量分数与灰分质量分数呈正相关关系，部分煤样品由于有富稀土元素的重矿物组合的存在而出现稀土元素的异常高值。 |
| 7. | These investigations have found strong evidence for the former presence of 26al in the so - called refractory inclusions : tiny mineral assemblages , rich in calcium and aluminum , embedded in chondritic meteorites alongside the chondrules
这些研究发现了强而有力的证据，显示铝26曾经存在于所谓的耐火包体（富含钙和铝的细小矿物组合体，与球粒一起镶埋在球粒陨石内） 。 |
| 8. | Among them the x - ray diffraction analysis is mainly used to confirm clay mineral assemblages and their crystallinity ; chemical analysis and electronic microscope are used to study the source , the genesis and the evolvement process of clay minerals ; radioactive isotopes analysis can make up the relationship between the time and space which is based on the climate index and the chronology ; hydrogen and oxygen isotopes also provide important evidence for reconstructing paleoclimate
其中， x射线衍射分析主要用来确定黏土矿物组合及其含量以及某些黏土矿物的结晶度化学分析电镜分析主要用于黏土矿物的来源成因演变过程的研究放射性同位素的研究使气候指标和年代学建立起时间和空间上的联系而氢氧同位素分析亦能对古气候重建提供重要佐证。 |
| 9. | The authors studied the characteristics of element geochemistry , mineral assemblage and microtexture of the white reticulate clay in the quaternary laterite of the dongting basin with some experimental analysis methods , such as chemical analysis , x - ray diffraction analysis , ir and sem analysis . the genesis of the vermiculate reticulate clay and the rhizomatic reticulate clay in the quaternary laterite of the dongting basin are discussed . the formation of crannies or holes in the soil and the transference of soil elements are absolutely necessary conditions to form the white reticulate clay in laterite
在野外考察的基础上，运用化学全量分析x射线衍射分析红外光谱分析和扫描电镜微形貌分析等实验方法和手段，对洞庭盆地第四系红土地层中网纹的元素地球化学矿物组合特征和微形貌特征进行了系统研究，对洞庭盆地红土地层中2种主要的网纹类型蠕虫状网纹和根状网纹的成因进行了探讨。 |
| 10. | The metallic mineral has very few content ( 1 % - 2 % ) , the mineral of ore is mainly of pyrite , chalcopyrite , limonite , aurum and electrum etc . the gangue mineral is composed of chalcedony , micro grained quartz , calsite , sericite , adularia , aragonite , chlorite , laumontite , pyrophyuite , kaolinite and so on , which show the typical mineral assemblage of epithermal
矿石为典型少硫化物型，金属矿物含量极少( 1 - 2 ) ，主要有黄铁矿、黄铜矿、褐铁矿和自然金、银金矿等。主要脉石矿物有玉髓、微粒石英以及方解石、绢云母、冰长石、文石、绿泥石、浊沸石、叶腊石、高岭石等，属典型低温矿物组合。 |
