Feodosiyite

Feodosiyite
General
Category Chloride mineral
Formula
(repeating unit)		 Cu11Mg2Cl18(OH)8•16H2O
Crystal system Monoclinic, P21/c
Unit cell a=12.90, b=16.42, c=11.96 [Å], β=113.69o (approximated)
Identification
Crystal symmetry Monoclinic - Prismatic (2/m)
References [1][2]

Feodosiyite is a very rare chloride mineral, just recently approved,[1] with the formula Cu11Mg2Cl18(OH)8•16H2O. Its structure is unique.[2] Feodosiyite comes from the Tolbachik volcano, famous for many rare fumarolic minerals.[3] Chemically similar minerals, chlorides containing both copper and magnesium, include haydeeite, paratacamite-(Mg) and tondiite.[4]

References

  1. 1 2 "Feodosiyite: Feodosiyite mineral information and data". Mindat.org. Retrieved 2016-03-04.
  2. 1 2 Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Lykova, I.S., Vigasina, M.F., Britvin, S.N., Sidorov, E.G., and Pushcharovsky, D.Y. ,2015. Feodosiyite, IMA 2015-063. CNMNC Newsletter No. 28, December 2015, 1860; Mineralogical Magazine 79, 1859–1864
  3. ↑ "Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia - Mindat.org". Mindat.org. Retrieved 2016-03-12.
  4. ↑ "Haydeeite: Haydeeite mineral information and data". Mindat.org. Retrieved 2016-03-12.


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