Calc-spar definition

Calc-spar





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2 definitions found

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

  Calcite \Cal"cite\ (k[a^]l"s[imac]t), n. [L. calx, calcis,
     lime.] (Min.)
     Calcium carbonate, or carbonate of lime. It is rhombohedral
     in its crystallization, and thus distinguished from
     aragonite. It includes common limestone, chalk, and marble.
     Called also {calc-spar} and {calcareous spar}.


     [1913 Webster]
  
     Note: Argentine is a pearly lamellar variety; aphrite is
           foliated or chalklike; dogtooth spar, a form in acute
           rhombohedral or scalenohedral crystals; calc-sinter and
           calc-tufa are lose or porous varieties formed in
           caverns or wet grounds from calcareous deposits; agaric
           mineral is a soft, white friable variety of similar
           origin; stalaclite and stalagmite are varieties formed
           from the drillings in caverns. Iceland spar is a
           transparent variety, exhibiting the strong double
           refraction of the species, and hence is called doubly
           refracting spar.
           [1913 Webster]

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

  Calc-spar \Calc"-spar`\, n. [G. kalk (L. calx) lime E. spar.]
     Same as {Calcite}.
     [1913 Webster]

















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