zebra-rockhttp://www.oed.com/dictionary/zebra-rock_n%3Ftab%3Dmeaning_and_usezebra rock, n.
First published 2018

zebra rocknoun

  1. 1895–
    A form of dolomite rock showing narrow light and dark banding.
    1. 1895
      To Exchange Only!—Beautiful specimens of Zebra Rock consisting of pink Dolomite, gray Spar, and Calcite in alternate layers.
      Museum 15 June 225/2 (advertisement)
    2. 1930
      Mr. R. A. Hobson describes in detail a remarkable rock—called the zebra rock from its bizarre appearance—from the Kimberleys.
      West Australian (Perth) 10 December 12/1
    3. 1993
      Other attractions are Waringarri Aboriginal Arts and Pandanas Palm Wildlife Park and Zebra Gallery which features the world's only deposit of zebra rock.
      Sunday Herald Sun (Melbourne) (Nexis) 21 March
    4. 2004
      Recrystallized rock that contains alternating white and dark bands of dolomite is referred to as ‘zebra rock’.
      S. B. Castor & G. C. Ferdock, Minerals of Nevada (Nevada Bureau Mines & Geol. Special Pub. 31) 232/1

Originally published as part of the entry for zebra, n.

zebra rock, n. was first published in 2018.