Potassic-sadanagaite
A variety of Minerals
What is Potassic-sadanagaite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Potassic-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.
Quick Facts
Physical Properties
- Color
- black, dark brown
- Hardness (Mohs)
- 5 - 6
- Rock tumbling
- With care
- Streak
- pale brown
Chemical Properties
- Chemical Formula
- {K}{Ca2}{Mg3Al2}(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-sadanagaite is defined with A position: K dominant C2+ position: Mg dominant C3+ position: Al dominant W position: (OH) dominant.
- Elements
- Al, Ca, H, K, Mg, O, Si
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Potassic-sadanagaite FAQs
How do I identify Potassic-sadanagaite?
Potassic-sadanagaite can be identified by its hardness of 5 - 6 on the Mohs scale, black color. Look for these key characteristics when examining specimens.
What color is Potassic-sadanagaite?
Potassic-sadanagaite typically appears in black, dark brown. Color can vary depending on impurities and formation conditions.
How hard is Potassic-sadanagaite?
Potassic-sadanagaite has a hardness of 5 - 6 on the Mohs scale. This gives it moderate hardness.
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