摘要
在山东产出的两颗八面体金刚石中发现高钾高氯包体(K 48～58wt％,Cl 37～48wt％)。与之伴生的有碳质物和硅酸盐矿物包体。高钾高氯包体及其共生组合代表了金刚石生长初期阶段陷获的上地幔液相物质。这些液相物质富H_2O、K、Cl和碳质,并联系着地幔交代作用,其中碳质物可能是金刚石生长的碳源。
High-potasslum and high-chlorine inclusions have been found in two octahedral diamonds from Shandong Province (K:48～58wt.%, Cl:37～43wt.%). Coexisting with them are carbonaceous materials and silicate mineral inclusions. The high-potassium and high-chlorine inclusions and their paragenetic inclu sions can represent the liquid phase trapped during the primary stage of diamond growth from the upper mantle. Such liquid-phase material is rich in H_2O, K, C1 and carbonaceous material, and is associated with mantle metasomatism. This carbonaceous material is considered to be the carbon source for diamond growth.
出处
《矿物学报》
CAS
CSCD
北大核心
1992年第3期193-198,T002,共7页
Acta Mineralogica Sinica
基金
国家自然科学基金
关键词
金刚石
钾
氯
矿物包体
地幔
diamond
inclusion
mantle metasomatism
Shandong
