[1] : The Collaborative International Dictionary of English v.0.48

bitter spar \bit"ter spar"\
   a common name of dolomite; -- so called because it contains
   magnesia, the soluble salts of which are bitter. see
   dolomite.
   1913 webster
see also:
dolomite 

[2] : The Collaborative International Dictionary of English v.0.48

dolomite \dol"omite\ do^l"-omimact, n. after the
   french geologist dolomieu. geol.  min.
   a mineral consisting of the carbonate of lime and magnesia in
   varying proportions. it occurs in distinct crystals, and in
   extensive beds as a compact limestone, often crystalline
   granular, either white or clouded. it includes much of the
   common white marble. also called bitter spar.
   1913 webster
see also:
bitter spar 

Bitter Spar >> B Words
Bitter Spar, definition of term: Bitter Spar
bitter+spar_pag1.html

Bitter >> B Words
Bitter, definition of term: Bitter
bitter_pag1.html

Bitter Vetch >> B Words
Bitter Vetch, definition of term: Bitter Vetch
bitter+vetch_pag1.html

Bitter Betch >> B Words
Bitter Betch, definition of term: Bitter Betch
bitter+betch_pag1.html