It is well known that nitrogen is a major impurity in diamond because it can substitute the carbon in the diamond lattice. Hence diamonds may be classified as TypeⅠor Ⅱ based on the nitrogen content. The diamonds wi...It is well known that nitrogen is a major impurity in diamond because it can substitute the carbon in the diamond lattice. Hence diamonds may be classified as TypeⅠor Ⅱ based on the nitrogen content. The diamonds with higher nitrogen content are classified into Type Ⅰ. Diamonds in which nitrogen is mainly present in aggregated form are put in Type Ia, whercas those in which nitrogen is mainly present in dispersed and isolated form into Type Ib. Synthetic diamonds often belong to Type Ib. However,展开更多
Recently mineral inclusions and diamonds containing these inclusions are divided into three suites: the peridotite, the eclogite and the late crystallizing megacryst suites by ways of the mineralogical and chemical co...Recently mineral inclusions and diamonds containing these inclusions are divided into three suites: the peridotite, the eclogite and the late crystallizing megacryst suites by ways of the mineralogical and chemical composition, and the isotopic characteristic of inclusions of diamonds. Since the 1960s some odd investigations about the mineral inclusions of diamonds were carried out in China. This is the first re-展开更多
文摘It is well known that nitrogen is a major impurity in diamond because it can substitute the carbon in the diamond lattice. Hence diamonds may be classified as TypeⅠor Ⅱ based on the nitrogen content. The diamonds with higher nitrogen content are classified into Type Ⅰ. Diamonds in which nitrogen is mainly present in aggregated form are put in Type Ia, whercas those in which nitrogen is mainly present in dispersed and isolated form into Type Ib. Synthetic diamonds often belong to Type Ib. However,
基金Project supported by the National Natural Science Foundation of China.
文摘Recently mineral inclusions and diamonds containing these inclusions are divided into three suites: the peridotite, the eclogite and the late crystallizing megacryst suites by ways of the mineralogical and chemical composition, and the isotopic characteristic of inclusions of diamonds. Since the 1960s some odd investigations about the mineral inclusions of diamonds were carried out in China. This is the first re-
