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Arsenical pyrites

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Pyrites \Py*ri"tes\, n. [L., fr. Gr. ?, fr. ? fire. See {Pyre}.]
   (Min.)
   A name given to a number of metallic minerals, sulphides of
   iron, copper, cobalt, nickel, and tin, of a white or
   yellowish color.

   Note: The term was originally applied to the mineral pyrite,
         or iron pyrites, in allusion to its giving sparks when
         struck with steel.

   {Arsenical pyrites}, arsenopyrite.

   {Auriferous pyrites}. See under {Auriferous}.

   {Capillary pyrites}, millerite.

   {Common pyrites}, isometric iron disulphide; pyrite.

   {Hair pyrites}, millerite.

   {Iron pyrites}. See {Pyrite}.

   {Magnetic pyrites}, pyrrhotite.

   {Tin pyrites}, stannite.

   {White iron pyrites}, orthorhombic iron disulphide;
      marcasite. This includes cockscomb pyrites (a variety of
      marcasite, named in allusion to its form), spear pyrites,
      etc.

   {Yellow}, or {Copper}, {pyrites}, the sulphide of copper and
      iron; chalcopyrite.
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