WordReference Random House Unabridged Dictionary of American English © 2020
calc-spar  (kalkspär′),USA pronunciation n. 
  1. calcite.
Also,  calcspar′. 
  • Swedish kalkspat calc-spar; t r by association with spar3; see calc-
  • 1815–25

'calc-spar' also found in these entries (note: many are not synonyms or translations):
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