Massicot
Mineral PbO
Also called Lead ochre
Take care.
- Contains lead: Wash your hands after handling it, keep it away from children, and don't make dust.
About it
Soft, yellow, earthy crusts on weathering galena, very heavy for a powder. The orthorhombic form of lead oxide; red litharge is the tetragonal form, and the two often occur together.
- Type
- Mineral
- Group
- Oxide
- Formula
- PbO
- Hardness (Mohs)
- 2
- Specific gravity
- 9.6–9.7
- Streak
- light yellow
- Lustre
- greasy, dull
- Crystal system
- Orthorhombic
- Colours
- sulphur yellow, yellow, reddish yellow
- Transparency
- translucent, opaque
- Cleavage and fracture
- distinct in two directions
Typical values: real specimens vary. For more, see mindat.org.