GEORGE BERNARD / SCIENCE PHOTO LIBRARY GEORGE BERNARD / SCIENCE PHOTO LIBRARY
Macrophotograph of crystals of native (naturally occurring) gold on a sample of auriferous quartz. Gold is a soft, yellow, malleable transition metal. It is often found in veins of quartz or as nuggets scattered through alluvial or glacial deposits. Gold is used in jewellery and dentistry and in electrical contacts and solders. It is chemically unreactive and has the chemical symbol Au. Magnification x2 at 35mm size.
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