• Webster's Revised Unabridged Dictionary
    • n Luxullianite (Min) A kind of granite from Luxullian, Cornwall, characterized by the presence of radiating groups of minute tourmaline crystals.
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Century Dictionary and Cyclopedia
    • n luxullianite A rock consisting of a finegrained mixture of schorl, feldspar, and quartz, through which are distributed large crystals of red orthoclase, found at Luxullian or Luxulian in Cornwall, England. From this rock was made the sarcophagus of the Duke of Wellington, in St. Paul's Cathedral, London.
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Webster's Revised Unabridged Dictionary
So called from Luxullian, in Cornwall