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Natural Pigments Marble Dust (fine) 1kg

Price: $9.95 CAD
The finest marble dust for making brilliant white grounds. Our whiting is dry ground from marble deposits in Georgia. Dry grinding reduces it to a powder without destroying its particle structure, which is important in making strong grounds and providing tooth on the surface of the grounds. The low surface area of our marble (when compared to precipitated chalk) keeps oil absorption low, which is ideal when adding it to oil paint and mediums. In painting grounds it makes a durable surface with tooth for egg and casein tempera, distemper, encaustic and oil paint.

Chalk is a soft, white, porous sedimentary rock, a form of limestone. Both limestone and marble are calcium carbonate (CaCO3), which is also the composition of the mineral calcite. Marble is a metamorphic rock composed of recrystallized calcite. The metamorphism of limestone causes the calcite grains to grow in size and to interlock with one another. The result is that marble is noticeably more dense and harder than limestone. Limestone forms under deep marine conditions from the gradual accumulation of minute calcite plates (coccoliths) shed from micro-organisms called coccolithophores and hence contains invertebrate fossils. However, these fossils are almost always destroyed by the metamorphic changes that convert limestone to marble.

Add to oil colors and mediums to create textural and bodying qualities to oil paint without affecting the color. Mrble dust has little color in drying oil, so it can be added to oil paint without affecting the tint of the color.

Product id: RB-510-10GS255

Stock level: There is low inventory for this item


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