| http://www.w3.org/ns/prov#value | - Examples of the powder particles include powdery talc, silica, alumina, zeolite, calcium carbonate, magnesium carbonate, barium sulfate, zinc oxide, titanium oxide, aluminum hydroxide, magnesium hydroxide, mica, clay such as montmorillonite, carbon particles, glass fibers, carbon tubes, and the like.
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