Comet samples returned to Earth by the NASA Stardust mission have provided a surprising
glimpse into the nature of early Solar System materials and an epiphany on the origin of the …

▪ Abstract Chondrules are∼ 1-mm igneous droplets in primitive meteorites, and their
abundance suggests widespread melting in the protoplanetary disk. Chondrules with relict …

Deciphering the spatial and temporal evolution of chondrules allows for a better
understanding of how asteroidal seeds formed, migrated, and eventually accreted into …

There is much debate about the origin of crystalline silicates in comets. Silicates in the
protosolar cloud were likely amorphous, however the temperature of the outer solar nebula …

Chondrule textures depend on the extent of melting of the chondrule precursor material
when cooling starts. If viable nuclei remain in the melt, crystallization begins immediately …

We present detailed electron microprobe analyses and oxygen three-isotope measurements
by high precision secondary ion mass spectrometry on 45 type I (FeO-poor) …

The N and C abundances and isotopic compositions of acid‐insoluble carbonaceous
material in thirteen primitive chondrites (five unequilibrated ordinary chondrites, three CM …

We review a number of constraints that have been placed on the formation of chondrules
and show how these can be used to test chondrule formation models. Four models in …

Millimeter‐scale rock particles called chondrules are the principal components of the most
common meteorites, chondrites. Hence, chondrules were arguably the most abundant …

Chromium, silicon, and phosphorus concentrations of 0.1 to 1 percent by weight are
common in metal grains in the least metamorphosed ordinary and carbonaceous chondrites …