Joanneumite

Joanneumite, confirmed as a new mineral in 2012, is the first recognized isocyanurate mineral, with the formula Cu(C₃N₃O₃H₂)₂(NH₃)₂.^[4][5] It is also an ammine-containing mineral, a feature shared with ammineite, chanabayaite and shilovite.^[6][7][8] All the minerals are very rare and were found in a guano deposit in Pabellón de Pica, Chile.^[9]

Joanneumite
Joanneumite (violet crystals), surrounded by salammoniac (fine-grained, blue-green mineral)
General
Category	Organic mineral
Formula (repeating unit)	Cu(C3N3O3H2)2(NH3)2
IMA symbol	Joa[1]
Crystal system	Triclinic
Crystal class	Pinacoidal (1) (same H-M symbol)
Space group	P1
Unit cell	a = 5.042, b = 6.997 c = 9.099 [Å]; α = 90.05° β = 98.11°, γ = 110.95°
Identification
Density	1.97-2.02 (measured)
References	[2][3]

See also

• Copper(II) cyanurate

References

1. Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
2. Bojar, H.-P., and Walter, F., 2012. Joanneumite, IMA 2012-001. CNMNC Newsletter No. 13, June 2012, 814; Mineralogical Magazine 76, 807-817
3. Mindat, Joanneumite, http://www.mindat.org/min-42755.html
4. Bojar, H.-P., and Walter, F., 2012. Joanneumite, IMA 2012-001. CNMNC Newsletter No. 13, June 2012, 814; Mineralogical Magazine 76, 807-817
5. Mindat, Joanneumite, http://www.mindat.org/min-42755.html
6. Mindat, Ammineite, http://www.mindat.org/min-38895.html
7. Mindat, Chanabayaite, http://www.mindat.org/min-43945.html
8. Mindat, Shilovite, http://www.mindat.org/min-46139.html
9. Mindat, Pabellón de Pica, http://www.mindat.org/loc-192704.html