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Mineral A

VS

Mineral B

P

Pumpellyite-(Fe3+)

Name

—

Ca₂Fe³⁺Al₂(Si₂O₇)(SiO₄)(OH,O)₂·H₂O

Formula

—

Mineral Species

Entry type

—

Silicates

Chemical class

—

Monoclinic

Crystal system

—

5

Mohs hardness

—

3.25

Specific gravity

—

—

Streak

—

[Vitreous.]

Luster

—

—

Cleavage

—

—

Space group

—

Pumpellyite

Structural group

—

Pmp-Fe3+ · Approved

IMA

—

1972

Named in

—

[Greenish black.]

Typical colors

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Ca · Fe · Al · Si · O · H

Elements

—