Crocoíta
Crocoíta is a mineral with formula PbCrO₄, in the Cromatos group. This specimen comes from Adelaide Mine, Dundas, Zeehan, Tasmania, Australia and joined the Terrium collection in 2025.
Description
Single prismatic crystal with flat faces. Deep reddish-orange colour and adamantine lustre. Strong internal reflections under light.
About Crocoíta
Lead chromate that crystallises in the monoclinic system. It forms in the oxidation zone of lead deposits in the presence of chromium. Known for its intense orange colour and its fragility.
About the locality
The mine at Dundas, Tasmania, is the type locality and the classic source of the most spectacular crocoite crystals, prized worldwide for their purity and size.
Technical data
- Catalogue No.
- 0239
- Composition
- PbCrO₄
- Name
- Crocoíta
- Group
- Cromatos
- Category
- Estélites
- Mine
- Adelaide Mine
- District / Municipality
- Dundas
- Province
- Zeehan
- Region
- Tasmania
- Country
- Australia
- Size (cm)
- 3.5 x 0.5 x 0.3
- Weight
- 3.5 g
- Acquired
- 2025
- Etymology
- For its colour, from the Greek "krokos" (κρόκος), "saffron".
- Quality
- Muy buena
- Value trend
- Al alza