"STEM kits"

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

Earthy, yellow brown iron ore.

White to gray, medium to coarse-grained, crystalline.

Sale

Introduce your students to a broad selection of minerals.

Kaolin is a white clay mineral that has vast industrial uses

Sale

Metamorphosed rock showing foliation and rich in hornblende.

Apatite is a gemmy blue phosphate mineral, mohs hardness 5.

Hemalite is a Massive, dense red to gray, classic example of iron ore.

Talc is the softest know mineral with a moh's hardness of 1, and composed of clay.

Sale

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