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

Grayite

Name

—

(Th,Pb,Ca)(PO₄)·H₂O

Formula

—

Mineral Species

Entry type

—

Phosphates

Chemical class

—

—

Crystal system

—

3–4

Mohs hardness

—

3.7–4.3

Specific gravity

—

—

Streak

—

Resinous to waxy

Luster

—

—

Cleavage

—

—

Space group

—

Rhabdophane

Structural group

—

Gry · Grandfathered

IMA

—

1957

Named in

—

Pale yellow, yellow, yellowish gray, reddish brown

Typical colors

—

Th · Pb · Ca · P · O · H

Elements

—