Montgomeryite | |
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General | |
Category | Phosphate mineral |
Formula (repeating unit) | Ca4MgAl4(PO4)6(OH)4·12H2O[1] |
IMA symbol | Mgm[2] |
Identification | |
Color | Dark green to light green, colorless, red, yellow[1] |
Mohs scale hardness | 4[1] |
Montgomeryite is a phosphate mineral with the chemical formula Ca4MgAl4(PO4)6(OH)4·12H2O.[1] The mineral was discovered in Fairfield, Utah in a variscite nodule.[3][4] Montgomeryite is a very rare mineral and can only be found in a few places in the world.[5]