Lead ochre
Lead minerals and pigments resembling them
From Wikipedia, the free encyclopedia
Lead ochre or lead ocher in American English (German: bleiocker; from Ancient Greek ὤχρα ōkhrós 'pale yellow, orange'), as well as plumbic ocher or lead oxide[1]: 209 — at least three lead minerals (pigments)[2]: 307, 495 that resemble ocher in appearance. Under such a trivial name, minerals and pigments of cream, yellow, orange and red colours were known, reminiscent of or corresponding to the powdery consistency of ochre. The term ″lead ochre″ was used primarily among glassblowers, artisans, as well as geologists and miners. It may refer to:
| Lead ochre | |
|---|---|
Lead ochre in two powders | |
| General | |
| Category | Minerals |
Essential minerals
- massicot[3]: 184 — β-PbO,[4]: 393 stable at temperatures above 489°C, metastable at room temperature, yellow crystals, is a secondary mineral which forms from the oxidation of galena ores — a bright yellow pigment
- litharge[5]: 548 — α-PbO,[4]: 393 stable up to a temperature of 489°C, red crystals, is a secondary mineral which forms from the oxidation of galena ores — a bright orange pigment
- minium — Pb2PbO4,[2]: 307 also known as red lead or red lead oxide — a bright orange red pigment
Gallery
Massicot (pigment)
