How do I identify Marrite?

Marrite can be identified by its hardness of 3 on the Mohs scale, Lead-gray color. Look for these key characteristics when examining specimens.

What color is Marrite?

Marrite typically appears in Lead-gray, steel-gray; often iridescent due to tarnish. Color can vary depending on impurities and formation conditions.

Marrite has a hardness of 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.

How to Identify Marrite | Properties, Meaning & Uses

What is Marrite?

Marrite (mar'-ite) is depicted by the chemical formula PbAgAsS3. It is the arsenic equivalent of mineral freieslebenite (PbAgSbS3), but also displays close polyhedral characteristics with sicherite and diaphorite. Marrite was named in honor of geologist John Edward Marr (1857–1933) of Cambridge, England.

Marrite Market Value Calculator

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

Marrite Localities Map

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

Map preview

North ZoneCentral RidgeSouth Basin

Key Characteristics

Formation of Marrite

The only known occurrence of Marrite is the type locality of the Lengenbach quarry in Binntal, Valais, Switzerland. It is primarily formed because of hydrothermal activity, which involves water and high temperatures. Marrite is predominately found in dolomite along with a variety of other sulfosalts.

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