In this paper, we review the mineralogy and chemistry of calcium‐aluminum‐rich inclusions
(CAIs), chondrules, FeNi‐metal, and fine‐grained materials of the CR chondrite clan …

Crystallization experiments on liquids with compositions similar to those of compact Type A,
Type B1 and Type B2 refractory inclusions were conducted under controlled temperature …

1. INTRODUCTION may be that much of the early solar nebula consisted of completely
vaporized primordial material (> 1800 K) that cooled monotonically (Cameron, 1963; Kurat …

Vapor pressures of Ca (OH) 2 (g) and Al (OH) 3 (g) were measured using the transpiration
technique, employing the reactions CaO (s)+ H 2 O (g)⇌ Ca (OH) 2 (g); 2CaAl 2 O 4 (s)+ H 2 …

Twenty-four hibonite-dominated refractory grains from the Murchison carbonaceous
chondrite have been identified from polished grain-mounts of density separates, and have …

Among the samples returned from comet 81P/Wild 2 by the Stardust spacecraft is a suite of
particles from one impact track (Track 25) that are Ca‐, Al‐rich and FeO‐free. We studied …

Refractory inclusions in the Mighei CM2 meteorite are very abundant, 35 being found in
three thin sections of the meteorite. The most common are pyroxene-rimmed spinel-rich …

Abstract Five Type A CAIs from three CV3 chondrites (Vigarano, Northwest Africa 3118,
Allende), which differ in age by no more than∼ 10 5 years, show mineralogical and textural …

We review recent results on O‐and Mg‐isotope compositions of refractory grains (corundum,
hibonite) and calcium, aluminum‐rich inclusions (CAIs) from unequilibrated ordinary and …

Phase fields in which hibonite and silicate melt coexist with spinel, CaAl4O7, gehlenitic
melilite, anorthite or corundum at 1 bar in the system CaO‐MgO‐Al2O3‐SiO2‐TiO2 were …