How do I identify Ferrimolybdite?

Ferrimolybdite can be identified by its hardness of 1 - 2 on the Mohs scale, Yellow color. Look for these key characteristics when examining specimens.

What color is Ferrimolybdite?

Ferrimolybdite typically appears in Yellow, canary yellow, or sulfur yellow, greenish yellow; colourless to canary-yellow in transmitted light. Color can vary depending on impurities and formation conditions.

How hard is Ferrimolybdite?

Ferrimolybdite has a hardness of 1 - 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.

Ferrimolybdite

A variety of Minerals

What is Ferrimolybdite?

Ferrimolybdite is a hydrous iron molybdate mineral with formula: Fe2(MoO4)3·8(H2O) or Fe2(MoO4)3·n(H2O). It forms coatings and radial aggregates of soft yellow needles which crystallize in the orthorhombic system.

Ferrimolybdite Market Value Calculator

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

Ferrimolybdite Localities Map

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

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North ZoneCentral RidgeSouth Basin

Key Characteristics

Formation of Ferrimolybdite

It was first described in 1914 for an occurrence in the Alekseevskii Mine in the Karysh River Basin, Khakassia Republic, Siberia, Russia. It was named for its composition (ferric iron and molybdenum). It occurs as an oxidation product of molybdenum bearing ore deposits. Associated minerals include: molybdenite, pyrite and chalcopyrite.

Quick Facts

Physical Properties

Color: Yellow, canary yellow, or sulfur yellow, greenish yellow; colourless to canary-yellow in transmitted light
Hardness (Mohs): 1 - 2
Density: 3.085 g/cm³
Streak: Light yellow