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

Earthy, yellow brown iron ore.

Metamorphosed rock showing foliation and rich in hornblende.

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

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

Massive white quartz with a moh's hardness 7.