中文摘要：

富尖晶石球粒状CAI（富Ca-Al难熔包体）是球粒陨石中一种特殊类型的CAI，在南极格罗夫山碳质球粒陨石GRV020025和GRV021579中共发现两个富尖晶石球粒状CAI——GRV020025-3R18和GRV021579-3R15。GRV020025-3R18具有占统治地位的尖晶石，在球粒的最外边存在严重蚀变的不规则边，钙钛矿主要分布在靠近边的位置。与GRV020025-3R18比较，GRV021579-3R15的尖晶石中的钙钛矿消失，深绿辉石出现，薄薄的蚀变层位于尖晶石核和富钙辉石边之间。两个富尖晶石球粒状CAI的尖晶石均具有低含量FeO和ZnO的特征，而且GRV021579-3R15具有较GRV020025-3R18更高的TiO2含量。岩石学和矿物化学特征表明，GRV020025-3R18和GRV021579-3R15都经历过熔融结晶过程，它们的蚀变均发生在非氧化的含水或无水的环境中。

英文摘要：

Spinel-rich spherule is a special Ca-, Al-rich inclusions （CAIs） in chondrites. Two spinel-rich spherules （GRV 020025-3RI8 and GRV 021579-3RI5） have been found from GRV 020025 and GRV 021579 carbonaceous chondrites collected from the Grove Mountains （GRV）, Antarctica. GRV 020025-3RI8 has a predominant spinel with a thin and irregular rim that has been strongly altered. A few grains of perovskite are enclosed in spinel mainly close to the rim. Compared with GRV 020025-3RI8, perovskite disappears and Ti-Al-rich Ca-pyroxene （fassaite） appears with spinel in the core and a whole Ca-pyroxene rim, and a thin layer of alteration between the spinel core and Ca-pyroxene rim in GRV 021579-3RI5. Both FeO and ZnO of spinel are low in the two spinel-rich spherule, and there is more TiO2 in spinel from GRV 021579-3RI5 than that from GRV 020025-3RI8. The petrography and mineral chemistry characteristics of the two spinel-rich spherules show features of crystallization from liquids and their alteration taken place under non-oxidized surrounding.