Zinc sulphide, ZnS, occurs in nature as blende (q.v.), and is artificially obtained as a white precipitate by passing sulphuretted hydrogen into a neutral solution of a zinc salt.
- From neutral solutions of its salts zinc is precipitated by sulphuretted hydrogen as sulphide, ZnS - a white precipitate, soluble, but by no means readily, in dilute mineral acids, but insoluble in acetic acid.
BLENDE, or Sphalerite, a naturally occurring zinc sulphide, ZnS, and an important ore of zinc. The name blende was used by G.
Another metallic sulphide, blende, ZnS, is of importance for Germany, Belgium and the United States, much less so for the United Kingdom, as a source of sulphur.
Most economic deposits of non-ferrous metals occur as sulfide minerals e.g. galena, PbS; sphalerite, ZnS; chalcopyrite, CuFeS 2.
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