Fluorcanasite

Fluorcanasite is a rare calcium, potassium, sodium fluoride silicate mineral.[1][2]

Fluorcanasite
General
CategoryMineral
Formula
(repeating unit)
K3Na3Ca5Si12O30F4•H2O
Crystal systemmonoclinic
Identification
Formula mass1,297.67 gm
Colorlight yellow
Cleavageeminent {100},{201}; perfect {001}
Lustervitreous
Streakwhite
Specific gravity2.69
Optical propertiesbiaxial (-)
Ultraviolet fluorescencenone
Solubilityslowly 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

  1. 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.
  2. 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.
  3. "Radioactive Gems : ClassicGems.net". www.classicgems.net. Retrieved 2020-12-25.
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