Aragonite * CO3Ca * Orthorhombique Pbnm 
7.968 5.741 4.959 90 90 90 P 10 C
Ca .417 .75 .25 .8 12 
Ca .083 .25 .25 .8 12 
C .75 -.083 .25 .4 0 
C -.25 .417 .25 .4 0 
O .917 -.083 .25 1.1 11 
O -.417 .417 .25 1.1 11 
O .67 -.083 .48  1.1 11 
O .67 -.083 .02  1.1 11 
O -.17 .417 .48  1.1 11 
O -.17 .417 .02  1.1 11