Sandstone in chalcedony matrix, polarised light micrograph

Numéro d’image : 12362092
Sandstone in chalcedony matrix, polarised light micrograph
Polarised light micrograph of sandstone, or arenite. Sandstone is a sedimentary rock composed of sand grain sized fragments of pre-existing rocks or minerals, known as clasts, cemented together by a matrix composed of minerals such as quartz, calcium carbonate, and iron oxide. In this example the grains are held together in a matrix of chalcedony. Sandstone is used in construction and paving and in the manufacture of glass. Most of the earth's oil and gas reserves are to be found in sand and sandstones due to their high porosity. Magnification: x27 at 10cm wide.
Licence : Droits gérés
Crédit: Science Photo Library / Lowry, Steve
Taille de l’image : 3872 px × 2592 px
Model Release : Non requis
Property Release : Non requis
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