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What is called this common iron mineral occurring as cuboid crystals?

goethite

hematite

piryte

siderite

The mineral piryte is an iron sulfide with the chemical formula FeS2. Pyrite is considered the most common of the sulfide minerals. Pyrite usually forms cuboid crystals, sometimes forming in close association to form raspberry-shaped masses called framboids.

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3

DidierDescouens wikipedia → Pyrite

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