Calcium carbonate: Ukiyo-e colorant
Calcium carbonate 胡粉(gofun): A white powder that can occur in three crystalline forms: Calcite (hexagonal-rhombohedral), Aragonite (orthorhombic) and vaterite. Calcium carbonate occurs naturally in many forms such as Chalk, Limestone, Marble and sea shells. In Japan, the source is sea shells.
Calcium carbonate has been detected...
For more information see: Calcium carbonate
Examples of Calcium carbonate in Ukiyo-e Prints
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Analysis
Excitation Emission Matrix (EEM) spectroscopy can easily identify the organic reds: safflower, madder, and sappanwood. Madder fluoresces brightly under UVA radiation and produces a unique EEM pattern that helps differentiate it from safflower, which also fluoresces.
EEM plot for Madder
Other Images of Calcium carbonate
Gofun, by Musashino Art University
Weathered oyster shells, by Central Japan Railway Company
Pages in category "Calcium carbonate: Ukiyo-e colorant"
The following 3 pages are in this category, out of 3 total.