Pebbles of snowflake obsidian rock

Pebbles of snowflake obsidian rock

E417/0147 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 29.6MB

Downloadable file size: 3.7MB

Price image Pricing

Please login to use the price calculator


Caption: Snowflake obsidian. Pebbles of weathered snowflake obsidian rock lying on sand. Obsidian is an igneous volcanic rock formed by the rapid cooling of granitic magma. It has a glass-like structure because it contains high levels of silica, the basic component of glass. The rock's black colour is due to the presence of small amounts of iron. Snowflake obsidian contains inclusions of white radial cristobalite clusters. Cristobalite is a form of quartz. These pebbles have been eroded and weathered in a fluvial environment into their smooth, polished shapes. Once used by Stone Age humans to make tools, obsidian is now used industrially as raw material for rock wool.

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

Keywords: cooled, cristobalite, earth science, geological, geology, igneous rock, in obsidian, magma, obsidian, pebble, pebbles, quartz, rock, rocks, snowflake obsidian, volcanic rock

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