Aluminoceladonite
| Aluminoceladonite | ||
|---|---|---|
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]
Occurrence
Aluminoceladonite is often referred to as a rare mineral, though its actual abundance may be underestimated due to difficulty of identification. Aluminoceladonite, along with other phyllosilicate minerals in the illite-aluminoceladonite solid solution series, has been observed mainly among finely dispersed, mostly inter-layer-deficient, aluminium-rich potassium-dioctahedral mica varieties occurring in sedimentary rocks.[5]
References
- S2CID 235729616.
- ^ "Aluminoceladonite: mineral information, data and localities". Retrieved March 18, 2019.
- ^ "Aluminoceladonite mineral data". Retrieved March 18, 2019.
- S2CID 62881038.
- S2CID 100485107.
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