Aluminoceladonite
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CategoryPhyllosilicate minerals
GroupMica group, dioctahedral mica group, celadonite subgroup
FormulaK(Mg,Fe2+)Al(Si4O10)(OH)2
IMA symbolAcel[1]
| Aluminoceladonite | |
|---|---|
 Heulandite with aluminoceladonite inclusions from Nashik District, Maharashtra, India (Dimensions: 14.8 cm x 10.2 cm x 6.5 cm) | |
| General | |
| Category | Phyllosilicate minerals |
| Group | Mica group, dioctahedral mica group, celadonite subgroup |
| Formula | K(Mg,Fe2+)Al(Si4O10)(OH)2 |
| IMA symbol | Acel[1] |
| Strunz classification | 9.EC.15 |
| Dana classification | 71.02.02a.06d |
| Crystal system | Monoclinic |
| Crystal class | 2/m |
| Identification | |
| Color | Colorless when pure, green when ferrous iron-bearing |
| Fracture | Micaceous |
| Optical properties | Biaxial (-) |
| Birefringence | 0.0190-0.0240 |
| References | [2][3] |
Aluminoceladonite is a low-temperature potassium dioctahedral mica mineral which is an end-member in the illite-aluminoceladonite solid solution series. The chemical formula for aluminoceladonite is K(Mg,Fe2+)Al(Si4O10)(OH)2.[4]
