Risorite samples

Risorite samples

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Credit: DIRK WIERSMA/SCIENCE PHOTO LIBRARY

Caption: Risorite samples. Close-up of a hand holding samples of the mineral Risorite. This is a titanium-bearing variety of the mineral fergusonite, which is an oxide of yttrium and niobium, but can contain several additional rare earth elements as well. It is a lustrous black to brown, or greyish black, and usually has an amorphous appearance. These samples are from Gjerstad, Norway, and measure 50 mm wide.

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Keywords: adult, caucasian, chemical, chemistry, close-up, detail, earth science, european, fergusonite, geographical, geography, geological, geology, hand, host rock, human, mineral, mineralogy, nature, niobium, norwegian, people, person, rare earth mineral, risorite, sample, samples, scandinavian, specimen, specimens, still life, still-life, titanium, titanium-bearing, variety, white, yttrium

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