micROCKScopica - Symplectite in Granulite
Bernardo Cesare
Department of Geosciences, University of Padova, Padova, Italy
Polarized light photomicrograph of a thin section of granulite from Manitoba, Canada.
The subject is an intricate "symplectic" intergrowth of pyroxene (pink and blue) and plagioclase (light gray) in a mafic granulite from N. Manitoba, Canada. The coherent distribution of colors, indicating optical continuity, shows that this pattern is actually provided by a few crystal of pyroxene and one of plagioclase intimately compenetrated. These minerals formed by replacement of a preexisting crystal of garnet. (Sample courtesy of Martha Growdon, Indiana University.)
Finalist in the EGU Photo Competition 2014
Location
Reuse
Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0) (opens in a new window)Credit: Bernardo Cesare (distributed via imaggeo.egu.eu)
Properties
Type
Image
Format
JPG
Size
4.2 MB
Aspect
1900:1267
Width
1900 px
Height
1267 px
Brand
Canon
Model
EOS 550D
Exposure
1/15 s ISO 100
Tint
Vivid purplish red
Submitted
21 February 2014
Taken
21 February 2014
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