Electronic Supplementary Information for: How similar are amorphous calcium carbonate and calcium phosphate? A comparative study of amorphous phases formation conditions I. Buljan Meić 1 , J. Kontrec 1 , D. Domazet Jurašin 2 , A. Selmani 2 , B. Njegić Džakula 1 , N. Maltar- Strmečki 2 , D. M. Lyons 3 , M. Plodinec 4 , M. Čeh 5 , A. Gajović 4 , M. Dutour Sikirić 2* , D. Kralj 1* 1 Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička c. 54, 10 000 Zagreb, Croatia 2 Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička c. 54, 10 000 Zagreb, Croatia 3 Center for Marine Research, Ruđer Bošković Institute, Giordano Paliaga 5, 52210 Rovinj, Croatia 4 Division of Materials Physics, Ruđer Bošković Institute, Bijenička c. 54, 10 000 Zagreb, Croatia 5 Department of Nanostructured Materials, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia * Corresponding authors: Damir Kralj Division of Materials Chemistry Ruđer Bošković Institute Bijenička cesta 54, 10 000 Zagreb, Croatia Phone: + 385 1 468 0207 Fax: + 385 1 468 0098 E-mail: kralj@irb.hr Maja Dutour Sikirić Division of Physical Chemistry Ruđer Bošković Institute Bijenička cesta 54, 10 000 Zagreb, Croatia Phone: + 385 1 456 0941 Fax: + 385 1 468 0245 E-mail: sikiric@irb.hr Electronic Supplementary Material (ESI) for CrystEngComm. This journal is © The Royal Society of Chemistry 2017