Compare Minerals

Put any two minerals side by side — formula, structure, hardness, density and more. Type to search each slot.

Mineral A

Mineral B

Piypite

Name

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K₄Cu₄O₂(SO₄)₄·(Na,Cu)Cl

Formula

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Mineral Species

Entry type

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Sulfates

Chemical class

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Tetragonal

Crystal system

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2.5

Mohs hardness

—

3–3.1

Specific gravity

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Yellowish green

Streak

—

Vitreous to greasy

Luster

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Perfect, parallel to elongation

Cleavage

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Space group

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Structural group

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Piy · Approved

IMA

—

1982

Named in

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Emerald-green, dark green, black

Typical colors

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K · Cu · O · S · Na · Cl

Elements

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