Minium (pigment) in the context of Lead tetroxide

A miniature (from the Latin verb miniare 'to colour with minium', a red lead) is a small illustration used to decorate an ancient or medieval illuminated manuscript; the simple illustrations of the early codices having been miniated or delineated with that pigment. The generally small scale of such medieval pictures has led to etymological confusion with minuteness and to its application to small paintings, especially portrait miniatures, which did however grow from the same tradition and at least initially used similar techniques.

Apart from the Western, Byzantine and Armenian traditions, there is another group of Asian traditions, which is generally more illustrative in nature, and from origins in manuscript book decoration also developed into single-sheet small paintings to be kept in albums, which are also called miniatures, as the Western equivalents in watercolor and other media are not. These include Arabic miniatures, and their Persian, Mughal, Ottoman and other Indian offshoots.

Lead(II,IV) oxide, also called red lead or minium, is the inorganic compound with the formula Pb₃O₄. A bright red or orange solid, it is used as pigment, in the manufacture of batteries, and rustproof primer paints. It is an example of a mixed valence compound, being composed of both Pb(II) and Pb(IV) in the ratio of two to one.

Lead(II,IV) oxide, also called red lead, lead tetroxide, or minium, is the inorganic compound with the formula Pb₃O₄. A bright red or orange solid, it is used as pigment, in the manufacture of batteries, and rustproof primer paints. It is an example of a mixed valence compound, being composed of both Pb(II) and Pb(IV) in the ratio of two to one.