Decoding the formation of barred olivine chondrules: Realization of numerical replication

Millimeter-sized silicate spherules embedded in primitive meteorites, namely, \"chondrules\", are the primary solid component of the early solar nebula. They exhibit distinctive solidification textures, formed through rapid cooling from a molten state. The formation conditions of these textures have primarily been inferred based on dynamic crystallization experiments; however, the theoretical verification of the solidification process has been largely neglected. Here, we conducted numerical simulations of the solidification of chondrule melt, and successfully reproduced a crystal growth pattern resembling a typical barred olivine chondrule texture. This pattern emerged under conditions of rapid cooling, exceeding 10^4 K/hr, which is significantly larger than those inferred experimentally. These results suggest that theories of chondrule formation in the nebula, which have been developed based on experimental results, should be re-examined., , # Decoding the formation of barred olivine chondrules: Realization of numerical replication

## GENERAL INFORMATION

**Dataset overview**

This dataset includes the numerical calculation results of this study and Python scripts for visualizing them. For details on the unstructured triangular grid used for numerical calculations, refer to the following related publication.

**Corresponding author information**

```
Name: Hitoshi Miura
ORCID: https://orcid.org/0000-0001-8891-1658
Affiliation: Graduate School of Science, Department of Information and Basic Science, Nagoya City University, Japan
email: [e-mail]
```

**Related publication**

```
Miura, H., Numerical model for the solidification of a chondrule melt. Icarus 425 (2025) 116317
https://doi.org/10.1016/j.icarus.2024.116317
```

## DATA STRUCTURE

Unzip `datafile.zip` to find four directories containing visualization scripts (Python files) and data files, and one directory containing the unstructured triangular ...,