micROCKScopica - Symplectite in Granulite
by 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.)
Taken on 21
February
2014
Submitted on 21 Feb 2014
Finalist in the EGU Photo Competition 2014
Categories
- European Geosciences Union (321)
- Geochemistry, Mineralogy, Petrology & Volcanology (854)
- Laboratory (101)
Location
Tags
minerals, metamorphism, petrography, science, microscope, symplectite, manitoba, art, granulite
Colour palette
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1900 × 1267 px;
image/jpeg; 4.2 MB
Camera:
Canon EOS 550D
Licence
Credit: Bernardo Cesare (distributed via imaggeo.egu.eu)
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