Activity

2002

• GEMSTONES, SEMI-PRECIOUS STONES, LAPIDARY MATERIALS, ORNAMENTAL STONES, AND OTHER UNIQUE MINERALS AND ROCKS OF WYOMING
  20 Gemstone and Semiprecious Minerals and Host Rocks in the Western United States
  Thursday, 9 May 2002

  8:00 AM - 11:00 PM
• GEOLOGY OF THE IRON MOUNTAIN KIMBERLITE DISTRICT, WESTERN WYOMING
  20 Gemstone and Semiprecious Minerals and Host Rocks in the Western United States
  Thursday, 9 May 2002

  8:00 AM - 11:00 PM