【摘要】 本文对雪宝顶绿柱石的晶体化学、矿物谱学、热释光和流体包裹体特征等进行了分析讨论。结果表明 ,雪宝顶绿柱石化学成分具有富碱、富水 ,过渡金属离子以Fe3+、Fe2 +为主的特点。碱金属离子、水和Fe2 +存在于绿柱石结构隧道中 ,隧道水分为Ⅰ型和Ⅱ型两类 ,Ⅰ型水可以进一步区分为Ⅰ1和Ⅰ2 两亚类 ,Fe2 +主要与隧道水结合形成水合离子 [Fe2 +(H2 O) ]。Fe3+主要占位于绿柱石AlO6八面体中的Al3+位 ,是导致绿柱石呈浅绿色的主要杂质离子。绿柱石的热释光强度和峰温可作为其标型特征之一。成矿溶液属于气成高温热水溶液 ,且富含大量碳酸或碳酸气。更多还原

【Abstract】 Studies of beryls from Xuebaoding by means of crystal chemistry, optical analysis, EPR and infrared spectroscopy indicate that beryls have high alkali ions and water content. Ferric ions(Fe 3+ ) occupy octaheral sites, whereas ferrous ions(Fe 2+ ), alkali ions and water molecules exist in the channel sites. There are two types of water molecules in the channel structure, namely Ⅰ type and Ⅱ type. Ⅰ type water molecules can probably be further divided into two subtypes(Ⅰ 1 and Ⅰ 2). The combination of ferrous ions(Fe 2+ ) with water molecules in the channel structure results in hydrated ferrous ions[Fe 2+ (H 2O)]. The green colour of beryls is caused by ferric ions(Fe 3+ ). The thermoluminescence strengths and peak temperatures of beryls can be regarded as the typomorphic characteristics. The deposit is genetically of hypothermal type. Ore_forming solutions have abundant acidulous water and mephitic air.更多还原