The open encyclopedia of minerals

Glossary Cite the database

Mineralogist.org

Minerals A–Z Search Collections Browse by Property Identify a Specimen Compare Minerals Localities Map Glossary Contribute Search the Database →

Compare Minerals

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

Mineral A

VS

Mineral B

N

Name

—

V³⁺₈Fe³⁺₂O₁₄(OH)₂

Formula

—

Mineral Species

Entry type

—

Oxides & Hydroxides

Chemical class

—

Hexagonal

Crystal system

—

—

Mohs hardness

—

4.65

Specific gravity

—

Brownish black

Streak

—

Submetallic

Luster

—

—

Cleavage

—

P6_3mc

Space group

—

Nolanite

Structural group

—

Nol · Grandfathered

IMA

—

1957

Named in

—

Black; dark gray to dark grayish violet in reflected light

Typical colors

—

V · Fe · O · H

Elements

—