『Abstract
　Laboratory experiments with two cyanobacterial strains grown on low-nutrient agar media in the presence of biotite flakes were performed in order to reveal possible mechanisms and rates of cyanobacterial bioweathering. Both cyanobacteria colonized the the biotite flakes. Leptolyngbya grew mostly in the biotite interlayers, whereas Hassallia colonized the sides and the topmost surface of the biotite flakes. After a 3-month incubation, rounded features including cyanobacterium-shaped pits were observed on the biotite surface cleared of the organic material. No such features were observed on flakes incubated for 1 month.』

Introduction
Materials and methods
　Organisms and media
　Mineral preparation
　Experimental setup
　Sample analyses
Results
　Cyanobacterial colonization of biotite
　Weathering features
Discussion
Conclusions
Acknowledgements
References