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

Rubicline

Name

—

Rb(AlSi₃O₈)

Formula

—

Mineral Species

Entry type

—

Silicates

Chemical class

—

Monoclinic

Crystal system

—

—

Mohs hardness

—

—

Specific gravity

—

[White.]

Streak

—

[Vitreous.]

Luster

—

Perfect on {001}, good on {010} (by analogy to microcline)

Cleavage

—

C2/m

Space group

—

Feldspar

Structural group

—

Rub · Approved

IMA

—

1996

Named in

—

Colorless

Typical colors

—

Rb · Al · Si · O

Elements

—