Cyanobacteria forming Minerals Intracellularly

A Photosynthetic Cyanobacterium Candidatus Gloeomargatia lithophora performs biomineralization i.e.formation of minerals (ca,mg.barium,strontium) intracellularly (importantly calcium carbonate) while other organisms are known to form extracellularly.

                             

                     Inclusions of calcium,magnesium,barium,strontium carbonates 

                                         seen inside the cyanobacterium.

10.1126/science.1216171
http://www.sciencedaily.com/releases/2012/05/120511101352.htm