Duftite
Mineral PbCu(AsO4)(OH)
Take care.
- Contains lead: Wash your hands after handling it, keep it away from children, and don't make dust.
- Contains arsenic: Wash your hands after handling it, don't make dust, and never heat it.
About it
Olive to apple-green crusts and tiny crystals of lead-copper arsenate, first described from Tsumeb in Namibia. Looks much like conichalcite and needs analysis to tell apart.
- Type
- Mineral
- Group
- Arsenate, adelite-descloizite group
- Formula
- PbCu(AsO4)(OH)
- Hardness (Mohs)
- 3
- Streak
- pale green
- Lustre
- vitreous (glassy), resinous
- Crystal system
- Orthorhombic
- Colours
- olive green, apple green, greyish green
- Transparency
- translucent
- Cleavage and fracture
- none; uneven fracture
Typical values: real specimens vary. For more, see mindat.org.