"STEM kits"

Earthy, yellow brown iron ore.

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

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

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Introduce your students to a broad selection of minerals.

Kaolin is a white clay mineral that has vast industrial uses

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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.

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