- ArchiefMG 146 - W.O. Kupsch fonds
- ReeksJ. Audio-Visual Materials
- 2093 more...
- StukWOK 18-150 - Quartz, var. Petrified wood, near Holbrook, Arizona
- StukWOK 19-1 - Smoky quartz, St. Gothard, Switzerland. A group of smoky crystals
- StukWOK 19-2 - Quartz twin, Japan. Typical "Japanese" twin.
- StukWOK 19-3 - Fluorite, Cave-in-Rock, Illinois. A group of large purple cubic crystals
- StukWOK 19-4 - Fluorite, Westmoreland, New Hampshire. An excellent example of the octahedral cleavage fluorite
- StukWOK 19-5 - Halite (cubo-octahedron)
- StukWOK 19-6 - Basic unit of silicate structure
- StukWOK 19-7 - Chain structures for amphiboles and pyroxenes
- StukWOK 19-8 - Muscovite.
- 203 more...