DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY
Antimonite (or stibnite), a sulphide of Antimony (Sb2S3) fitting the orthorhombic crystal system. It often forms prismatic to needle-like radial crystals as seen in the blue rosettes here. Used with lead in battery plates, and in manufacture of flameproofing compounds. From Neunkirchen in Siegerland, Germany. Width 60mm.
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