Lead ochre or lead ocher in American English (; ), as well as plumbic ocher or lead oxide â at least three lead minerals (pigments) 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 â³lead ochreâ³ was used primarily among glassblowers, artisans, as well as geologists and miners. It may refer to:
Essential minerals
- massicot â ò-PbO, stable at temperatures above 489ðC, metastable at room temperature, yellow crystals, is a secondary mineral which forms from the oxidation of galena ores â a bright yellow pigment
- litharge â ñ-PbO, stable up to a temperature of 489ðC, red crystals, is a secondary mineral which forms from the oxidation of galena ores â a bright orange pigment
- minium â Pb<sub>2</sub>PbO<sub>4</sub>, also known as red lead or red lead oxide â a bright orange red pigment
Gallery
See also
References