Species / Silicates / #0113
Alleghanyite
Silicates monoclinic #0113
Alleghanyite is a mineral species described as nesosilicate mineral. It is classified under the Nickel-Strunz scheme and its reference data is listed below.
| Formula | Mn²⁺₅(SiO₄)₂(OH)₂ |
| Strunz code | 9.AF.45 |
| Class | Silicates |
| Crystal system | monoclinic |
| Type locality | Bald Knob deposit |
| Named after | Alleghany County |
| Streak | — |
Composition
Mn
55.73%
O
32.46%
Si
11.4%
H
0.41%
Molar mass 492.866 g/mol
Physical
Mohs
Density
g/cm³