Agardite -(Y)


Composition: (Y,Ca)Cu2+6(AsO4)3(OH)6.3H2O
Crystal System : Hexagonal
Colours: Yellow-green
Lustre : Sub-vitreous, resinous, waxy
Hardness (H) : 3-4
Specific Gravity (S.G) : 3.61-3.72
References: Gebhard (1999)

Distribution

Extremely rare. Questionable status at Tsumeb. Listed by Gebhard (1999), but possibly in error (?). (Agardite-(Ce), however, is confirmed).

Occurrence

  • Supergene