Philipsburgite
Philipsburgite
– Cu5Zn(AsO4)(PO4)(OH)6·H2O
Fluorite
Talc (1)Diamond (10)
Softer than glass. A steel knife scratches it.
Did you know?
Philipsburgite has a quiet identity problem. In 2021 it was redefined and split off a near-twin, goldhillite, so many specimens long labeled philipsburgite, especially those from outside the original Montana mine, have since turned out to be the other mineral.
