CAJ | 학술논문

报道了3块南极格罗夫山碳质球粒陨石（GRV 020025、021579和022459）的矿物岩石学特征。3块碳质球粒陨石具有明显的非平衡陨石的特征，基质和球粒的模式比值分别为2．8（GRV 020025）、1．2（GRV 021579）和1（GRV 022459）。 GRV 022459具有明显较其他两块陨石大的球粒直径（0．6-2．0 mm）。在3块碳质球粒陨石中，一共发现了27个富Ca， Al包体，除了在GRV 020025和021579中各发现了一个富尖晶石球粒状包体，其余25个包体均属于A型（似A型）和富尖晶石-辉石型包体。大部分包体发生了强烈的蚀变， GRV 020025中的包体出现了大量层状硅酸盐，GRV 022459中的尖晶石具有富FeO的特征。最后，对南极碳质球粒陨石的下一步研究工作进行了展望。
보도료3괴남겁격라부산탄질구립운석（GRV 020025、021579화022459）적광물암석학특정。3괴탄질구립운석구유명현적비평형운석적특정，기질화구립적모식비치분별위2．8（GRV 020025）、1．2（GRV 021579）화1（GRV 022459）。 GRV 022459구유명현교기타량괴운석대적구립직경（0．6-2．0 mm）。재3괴탄질구립운석중，일공발현료27개부Ca， Al포체，제료재GRV 020025화021579중각발현료일개부첨정석구립상포체，기여25개포체균속우A형（사A형）화부첨정석-휘석형포체。대부분포체발생료강렬적식변， GRV 020025중적포체출현료대량층상규산염，GRV 022459중적첨정석구유부FeO적특정。최후，대남겁탄질구립운석적하일보연구공작진행료전망。
The petrography and mineral chemistry of three carbonaceous chondrites (GRV 020025, 021579 and 022459) collected from the Grove Mountains ( GRV) , Antarctica, are presented here .All three chondrites are unequilibrat-ed.The modal abundance ratios of matrix/chondrule are 2.8 (GRV 020025), 1.2 (GRV 021579) and 1 (GRV 022459).GRV 022459 has the largest chondrules (0.6-2.0 mm) among these meteorites.A total 27 Ca-, Al-rich inclusions have been found in thin sections of the three chondrites .Except for one spinel-spherule in each GRV 020025 and 021579, all other inclusions can be classified either as Type A ( or Type A-like) or spinel-pyrox-ene-rich inclusions .Most of the inclusions are intensively altered , with abundant phyllosilicates in the inclusions from GRV 020025 and FeO-enrichment of the spinel in GRV 022459 .Finally , we look forward to a stepped study of Antarctica carbonaceous chondrites .