English

Noun

chlorophane ‎(countable and uncountable, plural chlorophanes)

1. (mineralogy) A variety of fluor spar, which, when heated, gives a striking emerald-green light.
   • 2013, Jack DeMent, Handbook of Fluorescent Gems and Minerals - An Exposition and Catalog of the Fluorescent and Phosphorescent Gems and Minerals, Including the Use of Ultraviolet Light in the Earth Sciences, Read Books Ltd (ISBN 9781473382763)

     CHLOROPHANE. The Amelia Court House, Va., locality yields a bluegreen fluorescing chlorophane. Kunz and Baskerville qualitatively studied the emission from Chlorophane in 1903. (See also the discussion for Fluorite which is also […]

   • 1904, Knowledge...: A Monthly Record of Science, page 72

     Chlorophane is the name given to those varieties of Fluorite (Fluorspar Calcium Fluoride), which possess to a noticeable extent the property of “thermo-luminosity ," that is to say, of spontaneous_' emitting light when heated. The temperature […]

   • 1851, The Edinburgh New Philosophical Journal: Exhibiting a View of the Progressive Discoveries and Improvements in the Sciences and the Arts, page 94

     the light from chlorophane is incomparably less intense than that from a common lamp. For there can be no doubt that each of the ten discharges gave a light which lasted brilliantly for six seconds, and upon the whole was equal in duration […]

2. (biology) The yellowish-green pigment in the inner segment of the cones of the retina.

See also

• chromophane