SEARCH Articles Figures Tables A type B1 inclusion from the Allende CVS chondrite. This centimeter-sized marhle consists mainly of melilite . Type B1 inclusions figure prominently in the early petrologic, trace element, and isotopic studies of CAIs, in part because of the richness of information about physicochemical histories available from petrologic, chemical and isotopic properties. Ironically, because type B inclusions occur only in CVS chondrites, they are nonrepresentative of CAIs in general. Photograph taken in cross-polarized transmitted fight. The colors are not the true colors of the crystals they are artifacts of the polarized fight. [Publishers Imprint]