Hafnon
HfSiO4 [CNMNC approved formula]
Named for the composition containing hafnium.
| IMA status : | Approved Species 1974 () |
| CLASSIFICATION | |
| Dana (8th edition) : |
51.05.02.02 |
| (51) Nesosilicate Insular SiO4 Groups Only | |
| (51.05) with cations in >[6] coordination | |
| (51.05.02) Zircon group | |
| Nickel-Strunz (10th edition) : |
09.AD.30 |
| (09) Silicates | |
| (09.A) Nesosilicates (Isolated tetrahedron) structures | |
| (09.AD) Nesosilicates without additional anions; cations in [6] and/or greater coordination | |
| Crystal system: | Tetragonal System |
| Point group (H-M): | 4/mmm (or 4/m 2/m 2/m) — ditetragonal-dipyramidal |