Magnesium-bearing Annabergite

(Ni,Mg)3(AsO4)2·8H2O
Also known as
  • Cabrerite (of Dana)
  • Kabrerit
  • Magnesian Annabergite
  • +2 more
Variety of
Annabergite
AnnabergiteNi3(AsO4)2 · 8H2O

Where it forms, where it's found

12recorded occurrences
Source · OpenStreetMap

Safety & handling

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
8OOxygenOxygen1615.999255.984
38.15%
28NiNickelNickel358.693176.079
26.24%
33AsArsenicArsenic274.922149.844
22.33%
12MgMagnesiumMagnesium324.30572.915
10.87%
1HHydrogenHydrogen161.00816.128
2.41%
Total670.950100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From Mindat formula

Synonyms

  • Cabrerite (of Dana)
  • Kabrerit
  • Magnesian Annabergite
  • Nickel-Cabrerite
  • Wasserhaltige Nickeloxyd-Magnesia

Literature, links & citation

Citations
  1. 1863Ferber (1863) Berg.- und hüttenmännisches Zeitung, Freiberg, Leipzig (merged into Glückauf): 22: 306 (as Wasserhaltige Nickeloxyd-Magnesia).
  2. 1868Dana, James D., Brush, George Jarvis (1868) A System of Mineralogy (5th ed.). p.882
  3. 1951Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.
  4. 1996Wildner, Manfred, Giester, Gerald, Lengauer, Christian L., Mccammon, Catherine A. (1996) Structure and crystal chemistry of vivianite-type compounds: Crystal structures of erythrite and annabergite with a Mössbauer study of erythrite. European Journal of Mineralogy, 8 (1) 187-192 doi:10.1127/ejm/8/1/0187DOI: 10.1127/ejm/8/1/0187
  5. 2026Majzlan, Juraj; Többens, Daniel M; Lengauer, Christian (2026) Cation ordering in the annabergite-erythrite-hörnesite solid solutions. Mineralogy and Petrology. doi:10.1007/s00710-025-00963-9DOI: 10.1007/s00710-025-00963-9
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Magnesium-bearing Annabergite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/magnesium-bearing-annabergite-836},
  note      = {Accessed 2026-05-11}
}