Fluorcanasite
Fluorcanasite is a rare calcium, potassium, sodium fluoride silicate mineral.[1][2]
| Fluorcanasite | |
|---|---|
| General | |
| Category | Mineral |
| Formula (repeating unit) | K3Na3Ca5Si12O30F4•H2O |
| Crystal system | monoclinic |
| Identification | |
| Formula mass | 1,297.67 gm |
| Color | light yellow |
| Cleavage | eminent {100},{201}; perfect {001} |
| Luster | vitreous |
| Streak | white |
| Specific gravity | 2.69 |
| Optical properties | biaxial (-) |
| Ultraviolet fluorescence | none |
| Solubility | slowly decomposes in acid |
| Other characteristics |  Radioactive 0.77% (K) |
It is pleochroic, coloured amber, purple and lilac respectively along the α, β and γ optical axes.[1][3]
References
- Khomyakov, A. P.; Nechelyustov, G. N.; Krivokoneva, G. K.; Rastsvetaeva, R. K.; Rozenberg, K. A.; Rozhdestvenskaya, I. V. (December 2009). "Fluorcanasite, K3Na3Ca5Si12O30(F,OH)4 · H2O, a new mineral species from the Khibiny alkaline pluton, Kola Peninsula, Russia, and new data on canasite". Geology of Ore Deposits. 51 (8): 757–766. Bibcode:2009GeoOD..51..757K. doi:10.1134/S107570150908008X. S2CID 93274455.
- Khomyakov, A. P.; Nechelyustov, G. N.; Krivokoneva, G. K.; Rastsvetaeva, R. K.; Rozenberg, K. A.; Rozhdestvenskaya, I. V. (2009-12-01). "Fluorcanasite, K3Na3Ca5Si12O30(F,OH)4 · H2O, a new mineral species from the Khibiny alkaline pluton, Kola Peninsula, Russia, and new data on canasite". Geology of Ore Deposits. 51 (8): 757–766. Bibcode:2009GeoOD..51..757K. doi:10.1134/S107570150908008X. S2CID 93274455. Retrieved 2020-12-25.
- "Radioactive Gems : ClassicGems.net". www.classicgems.net. Retrieved 2020-12-25.
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