| Ashcroftine-(Y) | |
| Formula: | KNa(Y,Ca)SiO(OH)(CO)·8HO |
| Imasymbol: | Acf-Y |
| Color: | Pink |
| Mohs: | 5 |
| Luster: | Sub-Vitreous, Waxy, Silky |
| Gravity: | 2.61 |
Ashcroftine-(Y) is an alkali yttrium calcium carbonate mineral with the chemical formula KNa(Y,Ca)SiO(OH)(CO)·8HO. It was first identified in southern Greenland and named after British mineral collector Frederick Noel Ashcroft.[1]