Positive Biaxial Interference
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“A positive biaxial interference figure. The arrows indicate the movement taking place upon inserting a quartz wedge above the section. Olivine. (+).” -Johannsen, 1908
Keywords
rock-forming minerals, crystal optics, quartz wedge, crystal movement, positive biaxial interference figure, olivineGalleries
Miscellaneous OpticsSource
Albert Johannsen A Key for the Determination of Rock-Forming Minerals in Thin Sections (New York, NY: John Wiley & Sons, 1908)
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