50.3 MB (2.8 MB compressed)
5138 x 3425 pixels
43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)
DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY
Ferberite crystals. This iron wolframite mineral occurs as granular masses and slender prismatic crystals as seen here. It is a minor ore of tungsten. This sample is from Kifurwe, Rwanda, and measures 8cm long. From Collection Royal Museum for Central Africa, Tervuren, Belgium.
Model release not required. Property release not available.