| Montgomeryite | |
|---|---|
Montgomeryite found in South Australia | |
| General | |
| Category | Phosphate mineral |
| Formula | Ca4MgAl4(PO4)6(OH)4·12H2O |
| IMA symbol | Mgm |
| Identification | |
| Color | Dark green to light green, colorless, red, yellow |
| Mohs scale hardness | 4 |
Montgomeryite is a phosphate mineral with the chemical formula Ca4MgAl4(PO4)6(OH)4·12H2O. The mineral was discovered in Fairfield, Utah in a variscite nodule. Montgomeryite is a very rare mineral and can only be found in a few places in the world.