micROCKScopica - Ocean Jasper
Bernardo Cesare
Department of Geosciences, University of Padova, Padova, Italy
Polarized light photomicrograph of a thin section of Ocean Jasper.
Ocean Jasper is an orbicular silicified rhyolite (volcanic rock) from Madagascar. The photomicrograph is a close-up of impinging spherulitic orbs showing their radiating texture of fibrous chalcedony their opaque-rich cores. Just a 4 mm across.
Featured on GeoLog, the official blog of the European Geosciences Union (opens in a new window)
Properties
Type
Image
Format
JPG
Size
3.1 MB
Width
1900 px
Height
1318 px
Aspect
950:659
Brand
Canon
Model
EOS 550D
Exposure
1/10 s ISO 100
Taken
22 March 2013
Tint
Grayish greenish yellow
Submitted
21 February 2014
Licence
Credit
Bernardo Cesare (distributed via imaggeo.egu.eu)
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