pyrites \pyri"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.
   1913 webster

   note: the term was originally applied to the mineral pyrite,
         or iron pyrites, in allusion to its giving sparks when
         struck with steel.
         1913 webster

   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 pyrites, or copper pyrites, the sulphide of copper
      and iron; chalcopyrite.
      1913 webster pyritic
see also:
pyre arsenical pyrites auriferous pyrites auriferous capillary pyrites common pyrites 
hair pyrites iron pyrites pyrite magnetic pyrites tin pyrites 
white iron pyrites yellow pyrites copper pyrites 

tin \tin\, n. as. tin; akin to d. tin, g. zinn, ohg. zin, icel.
    dan. tin, sw. tenn; of unknown origin.
   1. chem. an elementary substance found as an oxide in the
      mineral cassiterite, and reduced as a soft silvery-white
      crystalline metal, with a tinge of yellowish-blue, and a
      high luster. it is malleable at ordinary temperatures, but
      brittle when heated. it is softer than gold and can be
      beaten out into very thin strips called tinfoil. it is
      ductile at 2120, when it can be drawn out into wire which
      is not very tenacious; it melts at 4420, and at a higher
      temperature burns with a brilliant white light. air and
      moisture act on tin very slightly. the peculiar properties
      of tin, especially its malleability, its brilliancy and
      the slowness with which it rusts make it very serviceable.
      with other metals it forms valuable alloys, as bronze, gun
      metal, bell metal, pewter and solder. it is not easily
      oxidized in the air, and is used chiefly to coat iron to
      protect it from rusting, in the form of tin foil with
      mercury to form the reflective surface of mirrors, and in
      solder, bronze, speculum metal, and other alloys. its
      compounds are designated as stannous, or stannic. symbol
      sn stannum. atomic weight 117.4.
      1913 webster

   2. thin plates of iron covered with tin; tin plate.
      1913 webster

   3. money. cant --beaconsfield.
      1913 webster

   block tin metal., commercial tin, cast into blocks, and
      partially refined, but containing small quantities of
      various impurities, as copper, lead, iron, arsenic, etc.;
      solid tin as distinguished from tin plate; -- called also
      bar tin.

   butter of tin. old chem. see fuming liquor of libavius,
      under fuming.

   grain tin. metal. see under grain.

   salt of tin dyeing, stannous chloride, especially so
      called when used as a mordant.

   stream tin. see under stream.

   tin cry chem., the peculiar creaking noise made when a
      bar of tin is bent. it is produced by the grating of the
      crystal granules on each other.

   tin foil, tin reduced to a thin leaf.

   tin frame mining, a kind of buddle used in washing tin
      ore.

   tin liquor, tin mordant dyeing, stannous chloride, used
      as a mordant in dyeing and calico printing.

   tin penny, a customary duty in england, formerly paid to
      tithingmen for liberty to dig in tin mines. obs.
      --bailey.

   tin plate, thin sheet iron coated with tin.

   tin pyrites. see stannite.
      1913 webster
see also:
block tin bar tin butter of tin fuming liquor of libavius fuming grain tin 
grain salt of tin stream tin stream tin cry 
tin foil tin frame tin liquor tin mordant tin penny 
tin plate tin pyrites stannite 

tin pyrites
     n : a dark gray mineral with a metallic luster that is a source
         of tin syn: stannite
see also:
stannite