Amethyst druse (crystals in a rock cavity)

Amethyst druse (crystals in a rock cavity)

E425/0568 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 51.0MB

Downloadable file size: 4.8MB

Price image Pricing

Please login to use the price calculator


Credit: GEOFF TOMPKINSON/SCIENCE PHOTO LIBRARY

Caption: Amethyst druse. A rock cavity lined with amethyst crystals. Amethyst is a type of quartz (silicon oxide) crystal which is purple in colour due to the presence of trace amounts of ferric iron. A druse is formed by deposition of silica on the inner surface of a geode (rock cavity). The silica precipitates out of water passing through the geode and forms quartz crystals. Quartz is one of the commonest minerals of the earth's crust (12 percent by volume). This sample is from Madagascar.

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

Keywords: amethyst, amethyst druse, druse, geode, mineral, quartz, silicon oxide, type

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