Images
Formula: Cu2Mg(AsO4)(OH)3
Arsenate
Crystal System: Triclinic
Specific gravity: 3.71 measured, 3.96 calculated (Morocco), 4.03 calculated (Chile)
Hardness: 5
Streak: Light blue, sky-blue
Colour: Dark blue to medium blue
Luminescence: Not fluorescent under UV
Environments
Arhbarite is a rare secondary mineral in polymetallic
hydrothermal ore deposits.
Localities
At the Guanaco Mine, Taltal, Antofagasta Province, Antofagasta, Chile, arhbarite is associated with
guanacoite
(HOM).
Arhbarite from the Guanaco Mine
At the Emma Luisa Mine, Guanaco Mine, Taltal, Antofagasta Province, Antofagasta, Chile, arhbarite is associated
with chrysocolla, brochantite,
olivenite, iodargyrite and
dolomite
(HOM).
Arhbarite from the Emma Luisa Mine - Image
At the type locality, the Aghbar Mine, Aghbar, Tansifte Caïdat, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region,
Morocco, arhbarite occurs as blue, spherulitic aggregates on massive
dolomite
(Mindat).
Associated minerals include dolomite,
hematite, löllingite,
pharmacolite, erythrite,
talc and mcguinnessite
(HOM).
Back to Minerals