How do I identify Magnesio-arfvedsonite?

Magnesio-arfvedsonite can be identified by its hardness of 5 - 6 on the Mohs scale, Bluish-black to black color. Look for these key characteristics when examining specimens.

What color is Magnesio-arfvedsonite?

Magnesio-arfvedsonite typically appears in Bluish-black to black, purple. Color can vary depending on impurities and formation conditions.

How hard is Magnesio-arfvedsonite?

Magnesio-arfvedsonite has a hardness of 5 - 6 on the Mohs scale. This gives it moderate hardness.

Magnesio-arfvedsonite

A variety of Minerals

What is Magnesio-arfvedsonite?

Magnesio-arfvedsonite Market Value Calculator

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

Magnesio-arfvedsonite Localities Map

See where Magnesio-arfvedsonite 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

Quick Facts

Physical Properties

Color: Bluish-black to black, purple
Hardness (Mohs): 5 - 6
Streak: Pale grey to dark bluish-grey.

Chemical Properties

Chemical Formula: {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2 The arfvedsonite group minerals are sodium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < C(Al+Fe3++2Ti) < 1.5 apfu with Fe as the dominant element in the C3+ position. Magnesio-arfvedsonite is defined with A position: Na dominant C2+ position: Mg dominant C3+ position: Fe dominant W position: (OH) dominant
Elements: Fe, H, Mg, Na, O, Si

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