Example – Sheldrickite, NaCa3(CO3)2F3 • H2O
Named for George M. Sheldrick, creator of the SHELX software, widely used for the refinement of crystal structures.
Sheldrickite, a new sodium-calcium-fluorocarbonate mineral species from Mont Saint-Hilaire, Quebec
Grice J D, Gault R A, Van Velthuizen J
The Canadian Mineralogist 35 (1997) 181-187