{{Short description|Arsenate mineral}} {{Infobox mineral | name = Cabrerite | boxwidth = | boxbgcolor = | image = | imagesize = | alt = | caption = | category = Arsenate minerals | formula = NiMg<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>·8H<sub>2</sub>O | IMAsymbol = | molweight = | strunz = 8.CE.40 | dana = | system = Monoclinic | class = Prismatic (2/m) <br/><small>(same H-M symbol)</small> | symmetry = ''C2/m'' | unit cell = a = 10.205(1), b = 13.377(1) <br/>c = 4.7382(4) [Å]; β = 105.057(7)°; Z = 2<ref name=Mindat/> | color = | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = | mohs = | luster = | streak = | diaphaneity = | gravity = | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | references = <ref name=Mindat>[http://www.mindat.org/min-471114.html Mindat.org]</ref> }}
'''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.<ref name=Mindat-Annabergite-Mg>[http://www.mindat.org/min-836.html Mindat.org]</ref> It was specified to refer to specimens with a Ni:Mg ratio of 1:2 in 2024.<ref name=Mindat/>
== References == {{Reflist}}
Category:Arsenate minerals Category:Magnesium minerals Category:Nickel minerals Category:Octahydrate minerals Category:Vivianite group Category:Minerals described in 2024
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