The α-β phase transition in volcanic cristobalite (2014)
Journal Article
Damby, D., Llewellin, E., Horwell, C., Williamson, B., Najorka, J., Cressey, G., & Carpenter, M. (2014). The α-β phase transition in volcanic cristobalite. Journal of Applied Crystallography, 47(4), 1205-1215. https://doi.org/10.1107/s160057671401070x

Cristobalite is a common mineral in volcanic ash produced from dome-forming eruptions. Assessment of the respiratory hazard posed by volcanic ash requires understanding the nature of the cristobalite it contains. Volcanic cristobalite contains couple... Read More about The α-β phase transition in volcanic cristobalite.

Controls on variations in cristobalite abundance in ash generated by the Soufrière Hills volcano, Montserrat in the period 1997-2010 (2014)
Journal Article
Horwell, C., Hillman, S., Cole, P., Loughlin, S., Llewellin, E., Damby, D., & Christopher, T. (2014). Controls on variations in cristobalite abundance in ash generated by the Soufrière Hills volcano, Montserrat in the period 1997-2010. Memoirs, 39, 399-406. https://doi.org/10.1144/m39.21

The Soufrière Hills Volcano (SHV) crystallizes cristobalite (crystalline silica) in its lava domes, and inhalation of cristobalite-rich ash may pose a chronic respiratory hazard. We investigate the causes of variation in cristobalite abundance (measu... Read More about Controls on variations in cristobalite abundance in ash generated by the Soufrière Hills volcano, Montserrat in the period 1997-2010.

The nature and formation of cristobalite at the Soufrière Hills volcano, Montserrat: implications for the petrology and stability of silicic lava domes (2013)
Journal Article
Horwell, C., Williamson, B., Llewellin, E., Damby, D., & Le Blond, J. (2013). The nature and formation of cristobalite at the Soufrière Hills volcano, Montserrat: implications for the petrology and stability of silicic lava domes. Bulletin of Volcanology, 75, Article 696. https://doi.org/10.1007/s00445-013-0696-3

Cristobalite is commonly found in the dome lava of silicic volcanoes but is not a primary magmatic phase; its presence indicates that the composition and micro-structure of dome lavas evolve during, and after, emplacement. Nine temporally and mineral... Read More about The nature and formation of cristobalite at the Soufrière Hills volcano, Montserrat: implications for the petrology and stability of silicic lava domes.

Injection of vesicular magma into an andesitic dome at the effusive–explosive transition (2010)
Journal Article
Williamson, B., Di Muro, A., Horwell, C., Spieler, O., & Llewellin, E. (2010). Injection of vesicular magma into an andesitic dome at the effusive–explosive transition. Earth and Planetary Science Letters, 295(1-2), 83-90. https://doi.org/10.1016/j.epsl.2010.03.027

A single, vesicular pyroclast collected from a major (11 × 106 m3) dome collapse eruption of the Soufrière Hills volcano, Montserrat (21st September 1997) was found to contain textural and Raman evidence for multiple decompression events and magma in... Read More about Injection of vesicular magma into an andesitic dome at the effusive–explosive transition.