micROCKScopica - Ocean Jasper
by 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
Categories
- European Geosciences Union (336)
- Geochemistry, Mineralogy, Petrology & Volcanology (944)
- Laboratory (107)
Location
Tags
- rhyolite (5)
- minerals (34)
- petrography (12)
- science (6)
- art (15)
- microscopy (25)
- ocean jasper (2)
- madagascar (3)
Colours
Image properties
1900 × 1318 px;
image/jpeg; 3.1 MB
Camera:
Canon EOS 550D
Taken on 22
March
2013
Submitted on 21 February 2014
Licence
Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)
Credit
Bernardo Cesare (distributed via imaggeo.egu.eu)
Share
Appreciate
Report