Sadanagaite
A variety of Minerals
What is Sadanagaite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Sadanagaite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Sadanagaite Localities Map
See where Sadanagaite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- black, dark brown
- Hardness (Mohs)
- 6
- Streak
- pale brown
Chemical Properties
- Chemical Formula
- {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(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. Sadanagaite is defined with A position: Na dominant C2+ position: Mg dominant C3+ position: Al dominant W position: (OH) dominant.
- Elements
- Al, Ca, H, Mg, Na, O, Si
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Sadanagaite FAQs
How do I identify Sadanagaite?
Sadanagaite can be identified by its hardness of 6 on the Mohs scale, black color. Look for these key characteristics when examining specimens.
What color is Sadanagaite?
Sadanagaite typically appears in black, dark brown. Color can vary depending on impurities and formation conditions.
How hard is Sadanagaite?
Sadanagaite has a hardness of 6 on the Mohs scale. This gives it moderate hardness.
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