How do I identify Johnsomervilleite?

Johnsomervilleite can be identified by its hardness of 4.5 on the Mohs scale, Dark brown color. Look for these key characteristics when examining specimens.

What color is Johnsomervilleite?

Johnsomervilleite typically appears in Dark brown. Color can vary depending on impurities and formation conditions.

How hard is Johnsomervilleite?

Johnsomervilleite has a hardness of 4.5 on the Mohs scale. This gives it moderate hardness.

Johnsomervilleite

A variety of Minerals

What is Johnsomervilleite?

Johnsomervilleite Market Value Calculator

Estimate the market value of Johnsomervilleite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Johnsomervilleite Localities Map

See where Johnsomervilleite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview

North ZoneCentral RidgeSouth Basin

Quick Facts

Physical Properties

Color: Dark brown
Hardness (Mohs): 4.5
Density: 3.41 g/cm³
Streak: Light brown

Chemical Properties

Chemical Formula: Na3CaFe11(PO4)9 Originally given, i.a., as {Ca}{Na6◻2}{Ca6Na2}{(Fe2+,Mg,Mn2+)43}(PO4)36; the above IMA formula is wrong
Elements: Ca, Fe, Na, O, P

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4.7