An introduction to vital industrial minerals.
Specimens included are the sources of aluminum, antimony, abrasives, barium, beryllium, chromium, cobalt, copper, graphite, iron, lead, magnesium, manganese, mercury, mica, molybdenum, nickel, quartz, strontium, tin, tungsten, zinc, and zirconium. The set is housed in a compartmented collection box and includes an identification list.
Contents: 45 numbered samples, 1" x 2".