"WardsSci000478"

Demonstrates Irregular Breakage

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

Brazil.

Feldspar group; blue-green, microcline, triclinic, ³/₄". Colorado.

This is the last surviving genus of an animal group with extensive fossil record.

Sale

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.

Examples of the More Important Minerals Found in Rocks

Small, highly ribbed, with excellent detail. Average size: ¹/₂" to ³/₄" diameter. Germany. It is a larger sized Pleuroceras for display. Average size: 1" to 1 ¾". Germany.