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Amethyst crystals, light micrograph

Amethyst crystals, light micrograph

E417/0197

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Credit

DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY

Caption

Amethyst crystals, thin section. Polarised light micrograph of a thin section through crystals of amethyst, a variety of quartz. The bands seen here are due to a change in the rate of formation of the crystals. The crystals form as molecules precipitate out of solution, and environmental factors can change the solution's properties. The bands are called phantoms.

Release details

Model release not required. Property release not required.

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