Caledonite
Mineral Pb5Cu2(SO4)3(CO3)(OH)6
Take care.
- Contains lead: Wash your hands after handling it, keep it away from children, and don't make dust.
About it
Small blue-green prisms in oxidized lead-copper ore, usually with linarite and leadhillite. Named for Caledonia, the old name for Scotland, after finds at Leadhills; also fine at Tiger, Arizona.
- Type
- Mineral
- Group
- Sulfate, lead-copper sulfate-carbonate
- Formula
- Pb5Cu2(SO4)3(CO3)(OH)6
- Hardness (Mohs)
- 2.5–3
- Specific gravity
- 5.6–5.8
- Streak
- pale bluish green
- Lustre
- vitreous (glassy), resinous
- Crystal system
- Orthorhombic
- Colours
- blue-green, bluish green, verdigris green
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect in one direction
Typical values: real specimens vary. For more, see mindat.org.