The Kelly brecciated chondrite, originally classified as a polymict breccia, is actually a monomict breccia, based on conclusions from this study. Microprobe analyses of differently textured clasts are very similar to each other and also to well-known LL-type chondrites. Clast and matrix olivine compositions range between Fa27–31, well within the range of LL-chondrite olivine. A correlation was found between the degree of recrystallization and plagioclase composition; least recrystallized plagioclase is more Ca-rich than fully recrystallized plagioclase. Petrographic observations of shocked, annealed, and unshocked clasts coupled with particle size distribution measurements strongly indicate that Kelly is similar to lunar metabreccias in mode of formation, i.e., repeated mixing and accumulation of disaggregated surface rocks and impacting debris followed by partial annealing under moderate temperatures. At least three breccia generations are indicated.