Cosmidis Biomineralization Lab

 Department of Geosciences, Penn State University

Microbial biomineralization is one of the mechanisms by which microorganisms impact their environment, and it is increasingly regarded as an important driving force in the chemical, geological and biological evolution of Earth throughout its history. Our research focuses on deciphering the molecular mechanisms involved in microbial biomineralization, understanding its impact on past and present environments, and using it as a tool for tracing microbial activity in the geological record.

C/S microstructures


All the Latest and Greatest

If you’d like to stay up to date regarding our latest research projects or be entertained by stories about the lab life, make sure you get in touch today.

New paper in Frontiers in Microbiology

November 2019

Learn how S. kujiense, a S-oxidizer, uses extracellular organics to form and stabilize sulfur minerals. First postdoc paper by Brandi Cron!

Full text available here

Congratulations Chloe!

October 2019

Chloe Stanton successfully passed her Master exam.

Stay tuned for her future paper on the biological mechanisms of the whiting events in Green Lake.


Thanks for your interest in our research. Get in touch with us for any questions or comments regarding our work and publications. We’d love to hear from you.

Find us:

408 Deike Building, University Park, PA 16802, USA

Phone: 814-865-7764

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