Species / Silicates / #0109
Allanite-(Y)
Silicates monoclinic #0109
Allanite-(Y) is a mineral species described as epidote supergroup, sorosilicate mineral. It is classified under the Nickel-Strunz scheme and its reference data is listed below.
| Formula | {CaY}{Al₂Fe²⁺}(Si₂O₇)(SiO₄)O(OH) |
| Strunz code | 9.BG.05b |
| Class | Silicates |
| Crystal system | monoclinic |
| Type locality | — |
| Named after | allanite group |
| Streak | — |
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Composition
O
39.09%
Y
16.71%
Si
15.84%
Fe
10.5%
Al
10.14%
Ca
7.53%
H
0.19%
Molar mass 532.043 g/mol
Physical
Mohs
Density
g/cm³