"WardsSci000764"

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

Gray to tan clastic rock made of silt sized particles.

Gabbro is Mafic igneous rock formed deep underground consisting of olivine and pyroxene.

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

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Substantial Set of Economically Important Minerals

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

Quartzite is hard, non-foliated rock formed from metamorphosed quartz sandstones.

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Hornblende is a dark amphibole group mineral, perfect for teaching Bowen's reaction series.

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Massive white quartz with a moh's hardness 7.

Red clastic rock composed of sand sized particles and hematite.

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