Fluorite, Westmoreland, New Hampshire. An excellent example of the octahedral cleavage fluorite

• WOK 19-4
• Item
• [1964]

Parte de W.O. Kupsch fonds

Smoky quartz, St. Gothard, Switzerland. A group of smoky crystals

• WOK 19-1
• Item
• [1964]

Parte de W.O. Kupsch fonds

Quartz, var. Petrified wood, near Holbrook, Arizona

• WOK 18-150
• Item
• [1964]

Parte de W.O. Kupsch fonds

Quartz twin, Japan. Typical "Japanese" twin.

• WOK 19-2
• Item
• [1964]

Parte de W.O. Kupsch fonds

Fluorite, Cave-in-Rock, Illinois. A group of large purple cubic crystals

• WOK 19-3
• Item
• [1964]

Parte de W.O. Kupsch fonds

Quartz, var. Milky quartz, Curay, Colorado. A choice group of large milky white crystals

• WOK 18-148
• Item
• [1964]

Parte de W.O. Kupsch fonds

Quartz, var. Rock crystal, Little Falls, New York.

• WOK 18-149
• Item
• [1964]

Parte de W.O. Kupsch fonds

Agate, Brazil. Banded grey agate, crystalline quartz and amethyst

• WOK 18-147
• Item
• [1964]

Parte de W.O. Kupsch fonds

Gypsum, var. Selenite, South Dakota. A "Fish-tail" twin

• WOK 18-146
• Item
• [1964]

Parte de W.O. Kupsch fonds

Gold, California. Heavy wire gold on milky quartz

• WOK 18-145
• Item
• [1964]

Parte de W.O. Kupsch fonds

Galena, Near Galena, Kansas. A group of cubic crystals

• WOK 18-144
• Item
• [1964]

Parte de W.O. Kupsch fonds

Calcite, var.

• WOK 18-141
• Item
• [1964]

Parte de W.O. Kupsch fonds

Calcite, Egremont, Cumberland, England

• WOK 18-140
• Item
• [1964]

Parte de W.O. Kupsch fonds

Fluorite, Rosiclare, Illinois. Typical cleavage octahedra

• WOK 18-143
• Item
• [1964]

Parte de W.O. Kupsch fonds

Recent changes in sea level

• WOK 18-138
• Item
• [1964]

Parte de W.O. Kupsch fonds