Cabrerite

Cabrerite
General
CategoryArsenate minerals
FormulaNiMg2(AsO4)2·8H2O
Strunz classification8.CE.40
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
(same H-M symbol)
Space groupC2/m
Unit cella = 10.205(1), b = 13.377(1)
c = 4.7382(4) [Å]; β = 105.057(7)°; Z = 2
Identification
References

Cabrerite is an arsenate mineral bearing magnesium and nickel. It is a member of the hörnesite-annabergite series in the vivianite group.

The name Cabrerite has been in use for any annabergite with notable incorporation of magnesium, typically nickel remaining the dominant ion. It was specified to refer to specimens with a Ni:Mg ratio of 1:2 in 2024.

References