Synthetic ultramarine inorganic blue pigment is one of common type of blue pigment which can be easily produced from locally available geomaterials. The chemical composition of these geo-materials (sulphur and clay) was ...
Synthetic ultramarine inorganic blue pigment is one of common type of blue pigment
which can be easily produced from locally available geomaterials. The chemical
composition of these geo-materials (sulphur and clay) ...