Massicot
Massicot is the mineral form of lead(II) oxide with a distinctive yellow to orange color. It commonly occurs as tabular or plate-like crystals and masses, exhibiting a resinous to greasy luster that can brighten when light catches flat faces. The mineral’s straightforward composition and vibrant hue make it a recognizable specimen among oxide minerals, often presenting a warm, buttery glow under display lighting.
- Formula
- PbO
- Rarity
- Common
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Oxide minerals; Lead oxide (PbO); Strunz 04.A
About Massicot
Notable specimens have been reported from the United States, where massicot can form in hydrothermal environments and as a secondary alteration product in lead-rich ore assemblages. Collectors prize the mineral for its strong color and the way its flat, lepanoramic faces can create striking contrasts when arranged with contrasting minerals or displayed on a dark matrix. While massicot is relatively straightforward in composition, its appearance can vary with impurities and crystal form, providing a range of visual textures from smooth, glossy faces to more granular, earthy surfaces.