Results 1 - 10 for Pleochroism

Origin of optical pleochroism in orthopyroxenes
715 Origin of optical pleochroism in orthopyroxenes By ROGER G. BURNS Department of Mineralogy and Petrology, University of Cambridge, Cambridge [Read 4 November 1965] Summary.
http://www.minersoc.org/pages/Archive-MM/Volume_35/35-273-715.pdf
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ABSORPTION AND PLEOCHROISM :
the american mineralogist, vol. 44, january_february, 1959 absorption and pleochroism : two niuch-neglected optical i'roperties of crystals* josnen a. l\'ienlenrno,t uniaersity of ...
http://www.minsocam.org/ammin/AM44/AM44_65.pdf
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PLEOCHROISM IN SYNTHETIC RUBY*
PLEOCHROISM IN SYNTHETIC RUBY* RcvNor,ps M. Drlrwrwc aNo Josnru A. X{eNpenrNo, Un'iaersity of Michigan, Ann Arbor, Michigan. ABSTRACT A generally applicable method of ...
http://www.minsocam.org/ammin/AM40/AM40_1055.pdf
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Colourand Pleochroism
Microsoft PowerPoint - 19 Biaxial Minerals micas.ppt
http://www.brocku.ca/earthsciences/people/gfinn/minerals/muscovite.pdf
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"Minerals that do things…"
Pleochroism is observed because the light moving through a crystal can be absorbed differently depending upon the crystallographic direction it is following.
http://www.mii.org/pdfs/Wild_and_Cool_Colors.pdf
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LightinMinerals II
3 Pleochroism: Tourmaline in PPL Birefringence Birefringence • Birefringence is the color of a grain in crossed polars. • Birefringence is the difference between the operative ...
http://ruby.colorado.edu/%7Esmyth/G3010/11Light2.pdf
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Inosilicates (Pyroxenes and Amphiboles)
In thin section it is clear with no pleochroism, which distinguishes it from other amphiboles. It shows high relief, inclined extinction, and is optically negative with a 2V of ...
http://www.tulane.edu/~sanelson/eens211/inosilicates.pdf
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Other Properties of Biaxial Minerals
2 Hornblende Pleochroism cleavage hbl hbl cpx cpx Pleochroism •Steps for the identification of the pleochroicscheme for biaxial minerals outlined on p. 101 of Nesse.
http://www.brocku.ca/earthsciences/people/gfinn/optical/Biaxial_Other_Properties.pdf
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Pyroxenoid Group
Pleochroism (x): colorless. Pleochroism (y): colorless. Pleochroism (z): colorless. Pyroxenoid: Pyroxferroite From http://www. webmineral.com/data/Pyroxferroite. shtml Physical ...
http://ruby.colorado.edu/~smyth/G5200/23Pyroxenoids.PDF
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Glaucophane
Note green to brown pleochroism. Tourmaline may also display bluish pleochroism. UNC sample? Rock type unknown Locality unknown Tourmaline This slide shows extinct trigonal cross-sections ...
http://www.geo.umass.edu/courses/geo311/Minerals%20in%20Thin%20Section%20_1_.pdf
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