Description: Polarizing microscope picture of rock thin section taken in crossed polarized light. Note the yellow-green amphibol with caracteristic cleavage.
Rock:Nepheline syenite gneiss
Local:Rio de Janeiro, Brazil
Author:Eurico Zimbres
Free for all use
Date: 1990
Date
10 March 2006 (original upload date)
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Author
No machine-readable author provided. Zimbres assumed (based on copyright claims).
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Description: Polarizing microscope picture of rock thin section taken in crossed polarized light. Note the yellow-green amphibol with caracteristic cleavage. Rock:Nepheline syenite gneiss Local:Rio de Janeiro, Brazil Author:Eurico Zimbres Free for al