金鱼三倍体诱导技术的初步研究

运用冷休克、热休克、静水压三种方法抑制金鱼受精卵第二次减数分裂，诱导金鱼三倍体．结果表明：金鱼三倍体诱导率明显受压力、处理温度、处理起始时间以及处理持续时间等因子的影响；在22℃水温下，受精8min后，在0℃冷休克条件下，持续处理14min的三倍体诱导率可达25．5％；受精10min后，在39℃热休克条件下，持续处理1min，三倍体诱导率可达100％；受精4min后，在550kg／cm^2静水压休克条件下，持续处理3min三倍体诱导率可达28．6％．还对提高金鱼三倍体诱导率和孵化率的方法进行了探讨．     

准噶尔北缘典型金矿床的稀土元素地球化学特征

准噶尔北缘存在浅成低温热液型金矿床、韧性剪切带蚀变糜棱岩型金矿床及浅成岩-构造蚀变岩型金矿床等主要矿化类型．通过分析比较这些主要矿化类型金矿的REE资料,建立了各典型金矿床的REE配分模式,探讨了各矿化类型金矿床之间的REE地球化学行为差异及其与成矿的关系．结果表明,就成矿作用而言,浅成岩-构造蚀变岩型金矿床比较简单,韧性剪切带蚀变糜棱岩型金矿床较复杂,浅成低温热液型金矿最复杂．     

夹皮沟片麻岩岩石化学特征及其地质意义

赋存了夹皮沟金矿区绝大部分金矿的夹皮沟片麻岩主要由ＴＴＧ质斜长片麻岩及其中拉斑玄武岩质暗色包体组成，岩石化学上呈双峰特征和奥长花岗岩系列演化趋势，ＲＥＥ组成上均显示了较大的Ｅｕ正异常，δＥｕ最高可达４．６，相似于西格陵兰等典型太古代高级变质地体中的双峰式片麻岩，与裂谷型太古代绿岩带中的双峰式钙碱性火山岩有着本质的不同．     

阿克提什坎金矿床稀土元素研究

系统地研究了新疆阿尔泰诺尔特地区阿克提什坎金矿床的稀土元素组成特征及热液中稀土元素的配分模型 ,并应用 Grant等位线方法讨论了热液蚀变作用过程中稀土元素的行为。认为在热液蚀变作用过程中 ,稀土元素保持惰性 ,成矿热液与岩浆热液有关 ,赋矿围岩及矿区花岗岩提供了成矿物质。     

Two kinds of Carlin-type gold deposite in southwestern Guizhou, China

Based on the organic geochemical studies on two typical Carlin-type deposits in southwestern Guizhou, as well as the comparison between the two deposits in terms of geological background, igneous rock, paleo-oilfield, lithofacies and paleogeographical and geochemical features, two kinds of Carlin-type deposit were proposed: Lannigou Type and Getang Type. The former includes Lannigou, Banqi and Yata gold deposits. These deposits are hosted by turbidite, geographically situated in the southwest of the mineralized district, and related genetically to paleo-oilfields. The latter includes Getang, Zimudang and Dachang gold (mercury and thallium) deposits, situated geographically in the northwest of the mineralized district where Emeishan basalt commonly occurs. These deposits are associated with reduction of coaly organic matter.     

Genesis of Carlin-type gold deposits in southwestern Guizhou Province, China

A solution containing nanometer-sized pure gold particles was prepared with the hydrolysisreduction method. As observed under the electron microscope, the gold particles were as large as 2–20 nm in size. Different kinds of mineral and rock were put into the solution and the experimental result showed that the nanometer-sized gold particles are obviously adsorbed on sulfide minerals, native copper and carbonaceous rocks. This experimental result is consistent with the actual geological observation. On this basis a better explanation is presented of the genesis of the Carlin-type gold deposits.