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1) Any nonmetallic mineral with a lustrous sheen and good cleavage. Examples include Iceland spar (Calcite), heavy spar (Barite), satin spar (calcite or Gypsum), Greenland spar (Cryolite), Feldspar, and fluorspar (Calcium fluoride).

2) A waterproof varnish originally designed for coating wooden masts (spars) on ships. See Spar varnish.

Resources and Citations

  • Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
  • Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942

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