Philipsburgite

philipsburgite

arthurite

cornwallite

veszelyite

Formula: Cu₅Zn[(AsO₄)(PO₄)]₂(OH)₆.H₂O
Redefined in 2021
Hydrated arsenate phosphate
Crystal System: Monoclinic
Specific gravity: 4.07 measured, 4.04 calculated
Hardness: 3 to 4
Streak: Pale green
Colour: Bright emerald green
Common impurities: Zn,P
Environments:

Hydrothermal environments

Localities

At Potts gill mine, Cumbria, England, UK, philipsburgite has been found associated with cornwallite, bayldonite, mimetite and malachite (HOM).

At the type locality, Black Pine mine, Montana, USA, philipsburgite occurs sparingly in a secondary assemblage of unusual copper-lead-zinc arsenates and phosphates (AM 71.1279). Associated minerals include bayldonite, chrysocolla, mimetite, quartz, arthurite, duftite, tsumebite and veszelyite (Dana, HOM).

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