Microdiamond crystal

Microdiamond crystal

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This image is part of the feature Microdiamonds

Credit: DAVID SCHARF/SCIENCE PHOTO LIBRARY

Caption: Microdiamond. Coloured scanning electron microg- raph (SEM) of a microdiamond crystal from Siberia, Russia. Microdiamonds are diamonds (pure crystals of carbon) which measure less than half a milli- metre in any dimension. This crystal is formed of triangular plates (macles). Microdiamonds are being studied as an alternative to the more expensive larger diamonds used in industry, for instance as abrasives or heat dissipators. Micro- diamonds are thought to form either with larger diamonds in the Earth's mantle (the layer beneath the crust), or in the ascending magma (molten rock) that can bring the larger stones to the surface. Magnification: x140 at 6x7cm size. x235 at 4x5 inch size.

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Keywords: carbon, chemical, chemistry, coloured, crystalline, diamond, element, geography, geology, macles, microdiamond, mineralogy, russian, scanning electron micrograph, sem, siberian, triangular

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