Compare Minerals

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

Mineral A

Mineral B

Manganilvaite

Name

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CaFe²⁺Fe³⁺Mn²⁺(Si₂O₇)O(OH)

Formula

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Mineral Species

Entry type

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Silicates

Chemical class

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Monoclinic

Crystal system

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5.5–6

Mohs hardness

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3.92

Specific gravity

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Black to brownish black

Streak

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Vitreous

Luster

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Distinct on {100}

Cleavage

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P2_1/a

Space group

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Ilvaite

Structural group

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Mlv · Approved

IMA

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2002

Named in

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Black, brownish red in transmitted light, bluish gray to gray in reflected light with red internal reflections

Typical colors

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Ca · Fe · Mn · Si · O · H

Elements

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