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{%type%} Definitions

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Short "hint"

n. - Dark acid granitic glass.

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Usage examples (19)
  • The aggregates of globular bodies seen in the section so greatly resemble the globulites of slags and natural glasses, and in their arrangement so forcibly recall the...
  • Sardara, Ploaghe, and other places; and considerable extents of trap and pitchstone are frequently met with on limestone strata, while others, tending fast to...
  • I strongly suspect the underlying granite has altered such beds into this pitchstone.
  • The lavas are curious from abounding in, or rather being in parts composed of pitchstone.
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