Two minerals have been selected which contain a common element . Forty samples are used to study 20 elements from the periodic table. Some of the specimens are mounted in plastic boxes, due to the rarity or beauty of the specimen. The specimens have been chosen on the basis of their chemical consistency, appearance, and texture. A five part Teacher's Guide comes with the set, to teach chemistry in a new and interesting way.
All specimens are number coded and keyed.
Suitable for grades 9th - college.