"WardsSci000478"

Large, black, rounded tektite, 1 1/2". Thailand.

Our Most Popular collection.

1 pound of black sand packaged in a heat-sealed bag.

An introductory rock set contains six samples from each of the three major rock types.

Clear, euhedral points and sections.

Both shortwave and longwave fluorescent minerals included.

Beginner’s Collection Illustrates Important Physical Properties

Massive, chlorite-rich.

White, fine, massive, opaque to slightly translucent.

Survey set improves student's recognition of all three major rock groups.