Image: <bdi><a href="https://www.wikidata.org/wiki/Q126871366" class="extiw" title="d:Q126871366"><span title="photographer from the United States">Nessa Eull</span></a></bdi> (CC0)
monoclinicuncommonArsenates
Annabergite
Ni3(AsO4)2·8(H2O)
Annabergite is a bright green nickel arsenate mineral, often forming as an alteration coating on other nickel minerals. It is the nickel analogue of erythrite and a member of the vivianite group.
Annabergite Physical Properties
Mohs Hardness
1.5Crystal System
monoclinicLuster
vitreousStreak Color
pale greenCleavage
good on {010}Fracture
unevenSpecific Gravity
3.06Colors
bright green, apple-green, yellowish-greenTransparency
translucentType Locality
LavrionMineral Group
ArsenatesUses
nickel ore indicator, collector's mineralAssociated Minerals
nickel mineralsRarity
uncommonGeological Context
It is a secondary mineral formed in the oxidized zones of nickel-bearing ore deposits, resulting from the alteration of primary nickel minerals.
