太阳星云凝聚过程的岩石学模型：（Ⅱ）非球陨石、C1陨石及类C1陨石的凝聚成因和小行星区星云凝聚作用

Petrological Model for Condensation Process of Solar Nebula:(Ⅱ)Condensation Genesis of Non-chondrites,C1 Meteorites and Quasi-C1 Meteorites and Condensation of Nebula in Asteroid Region

综述了非球陨石（铁陨石，石铁陨石和无球粒陨石）在成分结构方面的非分异成因证据，推断其成因是：星云盘中心层中的星云发生气－液凝聚作用形成的熔滴，在较高温度下彼此合并形成了较大熔体，熔体固化后形成该类陨石母体。根据Ｃ１陨石不含球粒和其它成分特征，推断它们是星云只发生气－固凝聚作用的产物。对近年来新发现的一些特殊成分的碳质球粒陨石进行了综合分析，暂定名为类Ｃ１陨石。通过类Ｃ１陨石与其它球粒陨石及Ｃ１陨石成分结构特征的对比，推断它们是星云盘边缘层星云发生气－液－固和气－固联合凝聚作用，同时发生水化作用的产物。最后，在对所有陨石凝聚成因进行解释的基础上，建立了小行星区星云凝聚模型。

The non-differentiation characters of composition and structure of non-chondrites(iron meteorites,stone-iron meteorite, and achondrites) are stated. We explained genesis of these meteorites, under higher temperature those melt drops from gas-liquid condensation in centric sheet of nebular disk merged into bigger melt body, the melt body solidified into parent body of these meteorites. Based on no-including chondrules and other characters of composition and structure, we think that the C1 meteorites are results of gas-solid condensation of nebula. Some abnormal carbonaceous chondrites found recently few years are named quasi-C1(Q-C1) meteorite by us. Through the comparative studies on Q-C1 meteorite, C1 meteorite, and other carbonaceous chondrite, the Q-C1 meteorite's origin is inferred that they were results if gas-liquid-solid condensation,gas-solid condensation and hydrous effect in border sheet of nebular disk.Finally, nebular condensation medel for astroid region is proposed.