1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Boracite  \Bo"ra*cite\,  n.  (Min.) 
  A  mineral  of  a  white  or  gray  color  occurring  massive  and  in 
  isometric  crystals;  in  composition  it  is  a  magnesium  borate 
  with  magnesium  chloride. 

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