Harmonized System

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Section XIII > Chapter 69 > Heading 6904

Explanatory notes

… clays), quartz, feldspar (or feldspathoïds), and sometimes calcium carbonate. It is covered with a colourless … Bone china, which contains less alumina, contains calcium phosphate (e.g., in the form of bone ash); a …

Section V > Chapter 26 > Heading 2611

Explanatory notes

… (b)   Hubnerite, manganese tungstate. (c)   Scheelite, calcium tungstate. (d)   Wolframite, tungstate of iron and …

Section V > Chapter 26 > Heading 2604

Explanatory notes

… are : (a)   Garnierite, double silicate of nickel and magnesium. (b)   Niccolite (nickelin), nickel arsenide. …