LM of thin section of porphyritic basalt rock

LM of thin section of porphyritic basalt rock

E417/0022 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 47.7MB

Downloadable file size: 5.3MB

Price image Pricing

Please login to use the price calculator


Credit: MIKE MCNAMEE/SCIENCE PHOTO LIBRARY

Caption: Cross polarised light micrograph of a thin section of a porphyritic basalt rock from Aberdeen, Scotland. The section is dominated by the large specimens of the minerals quartz & orthoclase feldspar. The quartz grains are clear grey, while those of orthoclase feldspar are darker grey. Large crystals, like these, embedded in a fine grained matrix are known as phenocrysts. A large twin crystal, known as a Carlsbad twin, is visible towards the upper right of the picture. A Carlsbad twin is a simpler variation of the multiple twins formed by plagioclase feldspar. Magnification x2.5 at 35mm size. Microcosmos P. 139 fig.7.23

Release details: Model release not required. Property release not required.

Keywords: basalt, carlsbad twin, crystallography, earth science, feldspar, geological, geology, light micrograph, orthoclase, orthoclase feldspar, phenocryst, rock, rocks

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.