What does bitter spar mean?

bitter spar meaning in General Dictionary

a typical name of dolomite so-called since it includes magnesia the soluble salts which tend to be bitter view Dolomite

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  • a light coloured mineral comprising calcium magnesium carbonate; a source of magnesium; used as a ceramic and as fertilizer
  • A common name of dolomite; -- so named as it includes magnesia, the soluble salts of which tend to be sour. See Dolomite.