How do I identify Potassic-ferro-ferri-sadanagaite?

Potassic-ferro-ferri-sadanagaite can be identified by its hardness of 5.5 - 6 on the Mohs scale, black color. Look for these key characteristics when examining specimens.

What color is Potassic-ferro-ferri-sadanagaite?

Potassic-ferro-ferri-sadanagaite typically appears in black. Color can vary depending on impurities and formation conditions.

How hard is Potassic-ferro-ferri-sadanagaite?

Potassic-ferro-ferri-sadanagaite has a hardness of 5.5 - 6 on the Mohs scale. This gives it moderate hardness.

Potassic-ferro-ferri-sadanagaite

A variety of Minerals

What is Potassic-ferro-ferri-sadanagaite?

Potassic-ferro-ferri-sadanagaite Market Value Calculator

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

Potassic-ferro-ferri-sadanagaite Localities Map

See where Potassic-ferro-ferri-sadanagaite 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: black
Hardness (Mohs): 5.5 - 6
Streak: greenish grey

Chemical Properties

Chemical Formula: {K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 The sadanagaite group minerals are defined as with 0,5 < A(Na+K+ 2Ca) where Na or K is dominant, and with 1,5 < C(Al+Fe3++2Ti), where Al or Fe3+ are dominant. The W position may contain (OH),F or Cl. Potassic-ferro-ferri-sadanagaite is defined with A position: K dominant C2+ position: Fe dominant C3+ position: Fe dominant W position: (OH) dominant.
Elements: Al, Ca, Fe, H, K, O, Si

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