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Arctite crystals

Arctite (Na2Ca4(PO4)3F) is a colourless mineral found in the Kola Peninsula northern Russia.[1] Its IMA symbol is Arc.[2] It has a Mohs hardness of 5 and has a specific gravity of 3.13. Arctite is transparent with a vitreous lustre. Arctite has a perfect cleavage and a trigonal crystal system.[3] It is also a naturally occurring antiperovskite.[4]

Common associates of arctite include aegirine, natisite, lomonosovite, umbite and thenardite.[1]


  1. ^ a b Mineral Handbook
  2. ^ Warr, L.N. (2021). "IMA-CNMNC approved mineral symbols". Mineralogical Magazine. 85: 291–320.
  3. ^
  4. ^ Arctite Supergroup on Mindat