Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)
monoclinicuncommonArsenates
Erythrite
Co3(AsO4)2·8H2O
This specimen displays vibrant crimson to peach-red erythrite crystals, likely forming radiating aggregates or drusy coatings on a matrix, characteristic of its striking color.
Erythrite Physical Properties
Mohs Hardness
2Crystal System
monoclinicLuster
pearlyStreak Color
pale red to reddish-pinkCleavage
perfect on {010}Fracture
unevenSpecific Gravity
3.1Colors
crimson, peach-red, pink, purple, violet-redTransparency
transparent to translucentType Locality
Bou Azzer, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, MoroccoMineral Group
ArsenatesUses
collector's mineral, indicator for cobalt oresAssociated Minerals
cobaltite, skutterudite, annabergite, native bismuth, arsenopyrite, quartz, calciteRarity
uncommonGeological Context
Erythrite is a secondary mineral that forms in the oxidized zones of cobalt-bearing hydrothermal deposits, typically as an alteration product of cobalt arsenide minerals.
