Explanatory notes
… (d) Stibnite (or antimonite), antimony sulphide. (e) Valentinite or white antimony, antimony oxide. (2) Beryllium ores. (a) Beryl, double silicate of beryllium and aluminium. (When in the … by‑products of the metallurgy of other metals (e.g., zinc, lead, copper, aluminium, zirconium, molybdenum). …