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15 January 2023

Geology Word of the Week: L is for Luster

  def. Luster (or Lustre if you use British spelling): The way in which the surface of a mineral or rock interacts with light. Words used by geologists to describe luster include metallic, sub-metallic, dull (or earthy), vitreous, waxy, silky, greasy, pearly, and adamantine.   Luster is a physical property that is used by geologists to help identify minerals and rocks. Other physical properties that geologists use for identification are …


26 September 2012

Geology Word of the Week: V is for Vitreous

Introductory Note: At long last, the Geology Word of the Week has returned! For almost a year, the Geology Word of the Week post has been on hold. I briefly resurrected the weekly word back in April with the posts T is for Time and U is for Ulexite, but the revival was short-lived. I neglected the weekly word because this past year has been busy and full of important life events and …