Tourmaline - Maine's Mountain Treasure

Examines the recent discovery of a large pocket of the gem tourmaline by an amateur rockhound on Plumbago Mountain, Maine.

Sources

  1. A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, sound, description
  2. 16mm Filmography (legacy record) — catalog record