Scheelite. Crystals of scheelite (calcium tungstate), an important ore of tungsten
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Scheelite. Crystals of scheelite (calcium tungstate), an important ore of tungsten
Crystals of scheelite (calcium tungstate), an important ore of tungsten from the collections of the Natural History Museum, London
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Media ID 8601449
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10704193
Calcium Crystal Fluorescence Fluorescent Fluorescing Matrix Mineral Natural History Museum The Natural History Museum Tungsten
EDITORS COMMENTS
This stunning photograph showcases a collection of Scheelite crystals, displayed against a dark background to highlight their unique fluorescent properties. Scheelite is a mineral composed of calcium tungstate, making it an essential ore for the extraction of tungsten. The crystals in this image exhibit a variety of shapes and sizes, with some displaying intricate, prismatic structures. The photograph was taken in the hallowed halls of The Natural History Museum in London, a world-renowned institution dedicated to the study and preservation of natural history. The museum's extensive collections showcase a vast array of minerals, including this beautiful example of Scheelite. The crystal is illuminated by fluorescent lighting, which causes it to emit a soft, ethereal glow. Fluorescence is a phenomenon that occurs when a mineral absorbs light at one wavelength and re-emits it at a longer wavelength. In the case of Scheelite, the fluorescence is a result of the calcium and tungstate ions within the crystal structure. The matrix in which the Scheelite crystals are set adds an additional layer of visual interest to the photograph. The matrix is a host rock or mineral that surrounds and supports the crystals as they grow. In this image, the matrix appears as a dark, textured backdrop, providing a striking contrast to the bright, fluorescent Scheelite crystals. Overall, this photograph captures the beauty and intrigue of Scheelite crystals, showcasing their unique fluorescent properties and the important role they play in the natural world as an ore of tungsten. The image is a testament to the wonders of mineralogy and the importance of preserving and studying natural history collections such as those held at The Natural History Museum in London.
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