File:Halite and Calcite in Museum.jpg

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English: Optical properties of Halite (NaCl, optically isotropic) and Calcite (CaCO3, optically anisotropic, see Birefringence)
Русский: Оптические свойства Галита (NaCl, оптически изотропный минерал) и Кальцита (CaCO3, оптически анизотропный минерал, см. Двойное лучепреломление). На обратную сторону минералов наклеены бумажки с их названиями.
Date Taken on 16 December 2007
Source
Русский: Фото из Минералогическго музея им. А. Е. Ферсмана Российской академии наук (Москва)
English: Photo from Fersman Mineralogical Museum of Russian Academy of Sciences (Moscow, Russia)
Author Александр Сигачёв

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current07:45, 7 June 2008Thumbnail for version as of 07:45, 7 June 20081,695 × 1,161 (304 KB)Александр Сигачёв (talk | contribs){{Information |Description={{en|1=Optical properties of Halite (NaCl, optically isotropic) and Calcite (CaCO3, optically anisotropic, см. en:Birefringence)}} {{ru|1=Оптические свойства Галита (NaCl, оптически изо

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