Abstract
Chondrules have some varieties of their chemical compositions and O-isotope composition between ordinary and carbonaceous chondrites. Considering the contemporaneous chondrule formation by 26Al ages, the chemical and isotopic varieties of the chondrules should reflect differences of physical and chemical conditions for chondrule formation between ordinary and carbonaceous chondrites. We systematically examined textures, chemical compositions, elemental distributions, and abundance of metal and sulfide of the chondrules between the least equilibrated ordinary and carbonaceous chondrites to clarify the differences of their chondrule forming environment in the early solar nebula.
