"WardsSci000478"

Calcite is a translucent calcium carbonate mineral, mohs hardness 3.

A textbook example of pure crystalline carbon which is extermely soft.

Selenite is a Clear gypsum mineral with a moh's hardness of 2.

Massive white quartz with a moh's hardness 7.

Metamorphosed rock showing foliation and rich in hornblende.

Massive sedimentary gypsum with a moh's hardness 2..

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

This coloful mix of naturally colored polished stones are available in a variety of tumbled sizes. 1 lb. package.

Teach students how to identify minerals with this collection.

Own a carbonaceous chondrite!